Wow... I really relate to this. I'm 50 as well, and I started coding in 1985 when I was 10... I remember literally every evolutionary leap forward and my experience with this change has been a bit different. Steve Yegge recently did an interview on vibe coding ( https://www.youtube.com/watch?v=zuJyJP517Uw ) where he says, "arch mage engineers who fell out-of-love with the modern complexity of shipping meaningful code…
These days, I've never been more excited about building. The frustration of being slow with the code is gone. I'm back to creating new, magical things - I'm up at 2 AM again, sitting at my desk in the dark, surrounded by the soft glow of monitors and casting spells.