What do you DO in heaven?
1. In heaven, everything is perfect and supremely good. If this is true, you have no free will, and everything you do must be supremely good. Therefore everything is determined. You act like a computer or automaton.
2. When in heaven, what do we do? Sit around playing the harp and lyre? Do we become omniscient? Aren't our limitations part of the fun and satisfaction of being human? Furthermore, what's the deal with the glorifying God and worshipping him in heaven? If he is perfect, he needs no one to glorify or worship him. He is already 100%. Our love cannot add to the 100% totality.
From Strobel's "The Case For Faith"
"It's like that old Twilight Zone television show, where a gang of bank robbers gets shot and one of them wakes up walking on fluffy clouds at the golden gate of a celestial city. A kindly white-robed man offers him everything he wants. But soon he's bored with the gold since everything is free, and the beautiful girls who only laugh when he tries to hurt them, since he has a sadistic streak. So he summons the St. Peter figure. "There must be some mistake." "No, we make no mistakes here." "Can't you send me back to earth?" "Of course not, you're dead." "Well, then I must belong with my friends in the Other Place. Send me there." "Oh, no, we can't do that. Rules you know." "But I thought I was supposed to like heaven?" "Heaven? Who said anything about heaven. Heaven is the Other Place." The point is that a world without suffering appears more like hell than heaven....
Pretend you're God and try to create a better world in your imagination. Try to create utopia. But you have to think of the consequences of everything you try to improve. Every time you use force to prevent evil, you take away freedom. To take away all evil, you must remove all freedom and reduce people to puppets, which means they would then lack the ability to freely choose love (p. 42)."
How Strobel makes this help the case for theism, I have no idea. Everything he says after this passage can be applied to existence in heaven.
REDUCTIO AD ABSURDUM.