Age discrimination is real. If you choose a programming career and don't enter management, then when you are 40+ you might find that you have trouble getting hired for a decent paying job, even if the industry otherwise appears to be booming. When I was studying CS 25 years ago I didn't even think about the age problem. Even if I had, it would not have seemed real at that time, but its real now.

That said, I don't know what else is a good career now. Perhaps primary care physician. I understand there is a shortage of them, but it's also the least paid medical profession. On the other hand, in the future few people may be able to afford most specialists. I already avoid going to them due to high copays.

Generally it seems like the US employment situation is getting less stable over time. But I admit my outlook is rather pessimistic.