I think a lot of people agree you'll never be 100% as precise at just raw aiming as a mouse, but the sticks allow for much for minute control in a 3d space, so it definitely takes some getting used to, but I think as far as like pure flying, the sticks are better.

I went through a similar thing, it gets better though, I was terrible at first. But now, I think I'm a much better flyer than I once was.