If the gates of Heaven and the presence of God are so great after death, why would ANYONE reject it for Hell?

If when you die, no matter what kind of life you led, it's as easy as looking at both Heaven and Hell, and you see Hell is extremely awful as you'd see and Heaven is this awesome pleasure paradise, then why in the world would anyone see Heaven, decline it, and choose Hell? That'd be like looking at two different foods to eat for dinner and choosing, either a bunch of live maggots, worms, and termites, or a tasty dinner from Red Lobster. So choosing Hell makes no sense. Obviuously, I'd choose Red Lobster after looking at both. And since you're talking eternity, it'd make much more sense for God to let you experience BOTH places for a moment. You wouldn't reject Heaven and then choose Hell if you've been to both places. And why woould God have to be so cruel and sadistic to arrange it where he makes you powerless to get out? And why must be be forever? I view the Christian God as a sadistic monster. I have more human compion than him. You make one little mistakeand he tortures you forever. That's cruel and sadistic. And again, if you really see both places after you die, why would ANYONE decline Heaven and freely choose to be lit on fire over and over again in excruciating pain? Again, this religion makes no sense.