The comment about hobby vs. work is correct, and it’s the crux of this.
OP is attempting to console themselves. “I shouldn’t have to change to avoid ‘falling behind.’ I like how I’m doing it. I’m good at what I do.”
The fact of the matter is the LLMs can be used to produce effective work faster than you. Yes. You are falling behind. And yes, it will reduce your value in the job market. Eventually it will be a dramatic reduction.
That doesn’t mean you must stop coding by hand, because you love it. But I don’t think you do love it. I think you love being praised for being smart. The pats on the head. That’s the most likely explanation for why your motivation for coding by hand has disappeared. Once the results stopped being a special output from your special brain, you stopped feeling special.
You have a choice now that the landscape is changing. You can find a way to produce unique and outstanding results that still matter, or you can slowly fade into a hardened stance of obsolescence and spend your time grumbling about the change.