Lenovo is the best for general purpose. You can also buy every part on their website.

My Dell work computer made it five years. Now the keyboard is flaky and there is no parts support any longer.

That was a decent run. The business/pro laptops have better construction and wear parts like keyboards. Mine was used continuously for five years and traveled frequently in my backpack.

You can hook up an external keyboard and mouse to save mileage on the computer.

keypads are the easiest thing to repair on a laptop, just 2 screws

What are you using it for? That should be your first question in deciding if you'll be buying a laptop or desktop.

Second question: do you like/want to do upgrades, or do you want to just buy something new when vid card dies or RAM needs an upgrade?

If you just like to poke around the internet and don't want to bother with upgrades, go laptop (or just use your phone or tablet, honestly)

If you want to do gaming, or will use it in one spot 90+% of the time, and/or you want to do your own upgrades, desktop.

(You could also consider a raspberry pi, keyboard, mouse, and portable monitor/display, but that would be more if you're mostly working in one spot but really do need to move locations from time to time.)

And always keep in mind - if the product is incredibly cheap but runs pretty well, you are what they're really selling (Lenovo, for example)

Depends of the laptop but the keyboard, screen etc can be quite easy to replace on many laptops.

Perhaps your not thinking about the full offering, a laptop can use a docking station and provide a more comfortable keyboard, mouse, monitor experience, yet be flexible in the event you want to use it at the park for a few hours. I use a Lenovo daily at work in this configuration, it allows me to pop it out and take it to a conference room for a meeting and then dock for a workstation experience. This isn't going to solve the issues others will point out about hardware upgrades and things like that, if that's more important than mobility then you should go that way, in fact that's how I run my home computer.

If you buy a laptop with a 4 year warranty, then you can have the keyboard replaced when it breaks, although you will be out for a while. What I do is buy one a year (per purpose) and keep the old ones as backups. I haven't really had much trouble with keyboards other than breaking them myself, so I'm not really sure what you're getting at. Macs have the best build quality but fuck Apple (they are also a bit difficult to repair, but on the other other hand there's a lot of people that know how to work on them because they're so common). Otherwise, I have good luck with Dells for work, and I use Razers for gaming.

OTOH, you can get all the features you are looking for in a laptop in a desktop with battery backup. The main thing you're going to get from a laptop is compactness and ease of portability. The reason most people use laptops is they have some need to travel, and they don't want to buy two computers, which saves money. Perhaps you should look into which laptops have easy to replace keyboards and touchpads if you're worried about it. I'm afraid the problem of not having spare parts is universal.

You absolutely do not need a tech to replace common parts. The most complicated thing you need is a heat gun and a set of electronics bits and some plastic pics. Also patience and the ability to watch videos and read forums. Most laptops, if you were soooo worried about WiFi Bluetooth etc you could take out the WiFi card and put tape over the camera...

Cons

• Laptops are at least 50-100% more expensive than a desktop
• Always-on bluetooth, wifi, NFC, etc. You cannot stop a knowledgable hacker from compromising your laptop (only a handful of laptops have hardware kill switches for network cards, these laptops usually suck and are over priced)
• Always-on camera pointed at your face the entire time you're using the device
• Hardware replacements are extreemely difficult in relative comparison to a desktop. This assumes you can find the parts you need.
• Most new laptops don't let you remove the battery. Have fun buying a new laptop once your battery craps out in 1 year.
• Less powerful than a desktop for the same price.
• Adding even more EMR (electro-magnetic radiation) into your life as the laptop is always blasting out wireless signals
• Easier for the manufacturer to backdoor your hardware (re: vault7)

Pros

• You can move it around more easily.

One downside of a laptop is they're not really upgradeable, unlike desktops where you can replace the motherboard and CPU and keep the rest of the system, which is what I just did--even kept my old DDR4 RAM.

It depends on what you're using the laptop for. These days computer components last longer and longer. Your laptop will be almost as good in five years, and you might be able to stretch its lifetime to ten years, at least if it's not a gaming laptop.

Another downside is for gaming, although if you can get a laptop with 3080ti, .

So even for gaming it can tackle mid-high end.

Cons - if keyboard or touchpad are broken, you can't easily replace them and need to bring it to a technician.

If you're using a laptop for an extended period of time, you'd get an external mouse, keyboard and screen anyway.

Personally I don't travel much, so I have no use for a laptop.