I'm a developer, mid/late fifties. My first computer was a Commodore Vic 20, so I guess I started writing code at about the same time as the OP even if I'm a few years older.

Yes, I mourn the end of my craft and all that that. But also:

This isn't the end of hand-written code. A few will still get paid to do it in niche domains. Some will do it as a hobby or craft activity - like oil painting or furniture making. The tooling will move on and become more specialised and expensive. Like owning Japanese woodworking tools.

But software construction as a human-based economic activity is clearly about to slam hard into a singularity, and many of us who rely on our hard-won skills to pay the bills and survive are going to find ourselves unemployed and unemployable. A few early adopters will get to stay on and sip their artesanal coffee and "build beautiful things" while their agent herds toil. But most of us won't. Software has always mostly been just CRUD apps, and that is going to need a whole lot less people going forward. People like me, perhaps, or you.

Some, who have sufficient financial and chronological runway, will go off and do other things. Many won't have that opportunity. I have personal experience of late-career unemployment - although I'm currently working - and its not pretty. A lot of lives are going to to be irreparably disrupted by this. Personally, I'd hoped that I could make it through to some stable kind of retirement, but I just don't see it anymore.