Everything in life may teach us something, and give us inspiration to create something new: a movie, a sunny day (a cloudy one too), a friend, even a scale or an arpeggio.
Ok, I'm a theory teacher, so my opinion must be carefully taken, but:
- learning is not so difficult. you just have to find the way (and/or the teacher) that's right for you
- once you've learned, you can do what you want with those things: you may stop, otr maybe you've become curious enough to start again a new level, in any case, you know more than before, and this may only help you.
An exemple: my good friend L., who incidentally is the guitar player in my own quartet, studied many years with a well-known teacher, and he learned any possible scale/chord/inversion/thing about harmony and improvisation. Well, he decided to throw it all away and play just like he feels: he's a very unique player (and underrated, I think) but still he has a deep knowledge of theory that makes him able to face effortlessly almost any situation.
If you just want to be the "next big spunky rockstar", maybe you don't need it, but it may be useful to enrich yourself and your "spunky rock";-).
If you want to be something more, well, YOU NEED IT.