You’re taking this too literally. The point is that you’re immortal, u(day in heaven) > u(day in neither heaven nor hell) > u(day in hell), and u(2 days in heaven and 1 day in hell) > u(3 days in neither heaven nor hell).
You don’t even need hell for this sort of problems; suppose God offers you to either cash in on your days in heaven (0 at the beginning) right now or wait a day after which he will add 1 day to your bank and offer you the same deal again. How long will you wait? What if God would halve the additional time for each deal so you couldn’t even spend 2 days in heaven, but could get arbitrarily close to it?
You’re taking this too literally. The point is that you’re immortal, u(day in heaven) > u(day in neither heaven nor hell) > u(day in hell), and u(2 days in heaven and 1 day in hell) > u(3 days in neither heaven nor hell).
You don’t even need hell for this sort of problems; suppose God offers you to either cash in on your days in heaven (0 at the beginning) right now or wait a day after which he will add 1 day to your bank and offer you the same deal again. How long will you wait? What if God would halve the additional time for each deal so you couldn’t even spend 2 days in heaven, but could get arbitrarily close to it?