Without first-hand knowledge of the benefit you could get from playing scales, I'm not sure what you're attesting to. You've managed to get along without them. That's fine. It might not make a noticeable difference after a few years of playing, but if you keep going, there are technical holes in your muscle memory which you don't even realize you have, which scales would help fill. (It's this way for everyone, BTW.) I still get benefit from scales after 25 years, and actually enjoy them much of the time-- when they're savored and played in fun patterns. The time to play scales in piano practice can be a lot like the meditation portion of a yoga routine.
On the other hand, if you're just playing "for fun," and aren't hitting any major technical frustration points, then whatever. Keep having fun. Just remember that if you start to not have fun, there are "icky" things like scales which can help you keep advancing. Scales can begin to help at any point in one's musical life.