I still have every personal email address I've made since the 90s. Including one at yahoo. It is handy, I can sign up for stuff. Unlike disposable ones it is still a notable provider so it isn't filtered out and I can recover passwords and such if need be. Saves some spam and effort. I regret not making more microsoft accounts before I automatically required a phone number. So far I've been fairly lucky that none have completely shut down without two step verification, though yahoo now asks nearly every time I log into it. Will drop all of them when it comes to that. Also two step verification is a scam both for information and to further tether you to a phone.