Well, I guess everyone had their abusive relationships in their lives at least once. Those abused (used Windows, in this instance) are tend to fall into another abusive relationships, unfortunately. Until they work through their problems.
That said, I’m happy you’re better (and not on Windows, yay!) Now, I sincerely wish you to find a loving and caring partner—
Ok, on a serious note, I can believe you that Kubuntu can be fine too, but I don’t understand why, if you can use a system that respects you. Say, even Debian. Or any other one. On the other hand, if it works, why break it. But I won’t sincerely recommend that to anyone new these days. Go with CachyOS or Fedora or Pop_OS! instead.