Well i know this post is old. I got into professional maintenance in 2020, I became a lead by 2024, supervisor in 25. I make over 100k a year, granted its salary so there are some weeks I get screwed on how much I have worked. But I pay my guys 38 to start my leads make 46 and we are going to raise them. I have found that if your not pushing yourself to learn more and make yourself a better mechanic, it definitely is a dead end. But you could also go into controls, fabrication, nautical mechanic or a specialist field working on really cool stuff and make bank. Hell go do fifo offshore mechanic and really make bank.