I'll be 40 in a few years but I give zero fucks about age discrimination.

I've found that most people don't really care how old you are as long as you provide them value.

But I don't work at a corporation so I guess that puts me in a slightly different position. Instead I record and sell video courses that teach modern development practices. All of that started after I was 30.

I guess my point is there's plenty of ways to live a fulfilling life as a software developer without ever being put in a position to be discriminated by anything.