My whole group was in on Infinity for a long time.
But eventually the intricacies of Infinity rules gets to you. It is a dense DENSE ruleset that requires constant referral to the rulebook.
It is fun. It is a great setting. But I know it wears on some people due to its complexity.
After a week of work where I'm heavy on the brain-stuff, I've decided I want my games dumber than Infinity.