If 'heaven' existed, wouldn't it simply be 'just another system'.
What's so special about Matrix^2..?
Do you think that if you made it to Matrix^2, having failed to survive your stay in Matrix^1, that you could die again to gain entry into Matrix^3..?
I don't know about you guys, but I'd be more interested in making Matrix^0. I mean, is World of Warcraft the best we can come up with? I think not!
By the way: One day you'll be dead. With that context, how do you want to conduct your life?
Maybe that's how you achieve selflessness... to realise that you're already dead. There's nothing you can do to stop it. It's going to happen.