Obviously you've never worked in construction. To be a great welder you have to be passionate because it involves heat, getting frequent weld burns, frustrations with equipment, traveling to remote places and being away from home. Do we love the problems and discomfort? No of course not. We love the challenge of overcoming and the pride we feel in a job well done as well as the decent pay. Not everyone is passionate and many quit. Those stick with the trade and are more skillful eventually overcome the problems while making it seem easy to others. I have seen new guys spend an entire shift in frustration while I did the same operation and literally smoked pass them with ease.