We do force sim from time to time, but most of the time we don't. We all know each other in real life and we all lead busy lives, meaning that we can't always play our game as quickly as we might like to. It's a different situation to most of the other leagues out there where you don't necessarilly know everyone that well. Even with our somewhat lax attitude we still manage to play through quite a few seasons though!
Even if we did institute a stricter policy for that league (and we are contemplating a 48 or 72 hour limit for this year) it wouldn't change my desire to play co-operatively. It's a completely different way of playing. For example, choosing a draft pick is so much more intense when it needs to be a collective decision. We can do this when we're in the same room together, but not when we're online.