I'm 'only' in my early thirties and I'm worried enough about the things you mention that I'm trying to change my trajectory as a programmer slightly away from '

I'm 'only' in my early thirties and I'm worried enough about the things you mention that I'm trying to change my trajectory as a programmer slightly away from 'web stuff' and towards, well, I'm not entirely sure, but at the very least back-end and data-sciencey things. The boundless optimism I had about there 'always being work' is not there anymore. Now I'm probably too cautious of a person, in general, and perhaps this is more just me getting older rather than anything real. Still.