Over 40 here, and I’m having the opposite experience. Honestly, I think experience is part of why. Years of projects teach you what to ignore: which generated code actually needs a careful review, which decisions matter, and when to stop. I don’t run many things in parallel. I’d rather do one thing well than babysit five agents.

It also helps that a lot of my AI use is on my own side projects, where I set the pace. That makes it fun instead of draining. Maybe the tiredness has less to do with AI itself and more to do with being pushed to maximize throughput?