A lot of good chess players I know change their openings or stop doing something that works... it seems crazy. Unless there is something terribly wrong with your opening... don't change it just because you are bored. Look at a large sample size of your notated games and figure out what your results are.
Also it's ok to keep on studying new openings to learn more about chess. But this post is mainly targeted towards the 2000+ people who change their openings that are clearly good openings that work!
If it's not broken... etc.