Hey whatever works :)
I've been boxing almost every day for almost 6 years now. The more into it I get, the more there is to discover and the tougher my sparring partners get. It really doesn't feel like repetition at all.
So maybe you just haven't found a sport you liked yet. Or haven't given them enough time to reach a level of mastery where it doesn't feel so repetitive anymore.
Some people enjoy repetition. Some... really don't.
For me the challenge is to keep finding new interesting sports.