Animisha And I also don't see the point of torturing myself with scales in keys that I don't even play.
I don't see anything wrong with this. If you see it as torture, then why do it? Yuck!
I was surprised that my teacher started me on scales, but I could very easily see why she did. When I arrived, my tone was extremely weak, my simultaneous notes were jagged, my crescendo/ diminuendo wasn't smooth, my left wrist sagged, my shoulders were up around my ears, and my legato wasn't even. She worked on all of that in C major and A minor harmonic. Then, we started adding the other keys one sharp/flat at a time, and I could see an immediate improvement in my ability to work out the fingerings in new pieces. The crossings are just there in many cases.
So I'm a huge advocate of doing stuff the way you want to. This is a hobby, and enjoyment is really important. If you hit a wall somewhere and you want to bust it down, and sleuthing sounds fun, then looking at technique and scales and stuff might provide some useful answers. Possibly the point of certain things isn't immediately obvious, and taking them as part of an entire system can reveal the value, solve problems, and relieve frustrations that didn't seem solvable.
But I'm ok with scales, theory, or anything being a hard nope for anyone just because it's not how you want to enjoy piano! Throw the scale books out the window and play how you want! ❤️