I been a web developer for 25 years and most of the websites I've built have long since been replaced or deleted. I built things but none of them lasted. And the last couple of years at my previous job was doing maintenance: I would keep things going just a bit longer until they could be replaced by a new stack, which was frustrating.

Recently I've spent some time working on my own projects. They are very modest and have only a small audience, but it is immensely satisfying to build things I want to, that I control fully, and that will last as long as I want to keep them running.