I used to be a lot more interested in working on "interesting projects", over time I realised it's not that worth it most of times. I might have some more fun and challenge for a while when it's a greenfield but after that it all devolves to the same-same: it's maintenance, it's an ever expanding scope to gobble more features, it's redesign, it's management deciding the project is not worth it. Rinse and repeat, after 20+ years you really get jaded, why bother if it all eventually devolves to the same state?