I don't think that there is anything wrong with taking a break from role playing. After all is said and done, despite how great the potential of an RPG is, it's still got that last part, Game, and some people get tired of those games after a while.
As others have noted, there are several things to try if you're not willing to take a break.
1. GM. Nothing can really prepare you for life on the other side of the shield. You see threads of GM burnout more often because it's more time consuming and resource consuming and often, the end result just isn't worth it but the experience is something that's hard to describe.
2. Switch Game Systems or switch Genres.
3. Switch Groups. After a while, everything seems old hat because with that group, everything is old hat. Person A will always make X with feat Y while person A will make B with spells C, D and E.