What Tin Foil said:
Why don't you take a break from playing until you get an itch again?
Don't do this. It will always end bad:
1/ you actually don't miss it that much and disconnect completely...
2/ You miss it, you start again after a while, but that doesn't bring the spark back...
I've seen it happen to multiple players before.
What I would recommend:
1/ Take the GM chair for a while and rule the world (sort of)
2/ Switch system for a while. Discover a new thrill. Maybe you'll like the new system and you're hooked to it, or you realize the 'old' system which didn't spark you anymore suddenly does so again.
What I tought I'd recommend is to play epic/mythic, but reverting back to 'normal play' afterwards hurts and seems so bland, so I'd skip that :-)