Think about it this way, God is having a party and it's big enough for him to invite all his friends, it's unlike anything you've ever seen and he wants you to come. Meanwhile, Satan is Gods enemy and he wants to crash the party. God knows who Satan is so he won't get in. But Satan would try to send one of his followers to do his dirty work for him. In Gods situation, would you allow for a soldier of your enemy to enter your house? No. If you are a follower of the Evil One, you would be better off at his house
and if you don't believe in the party, or just don't feel like going....well screw you, welcome to hell.
<edgy rant on Christianity deleted before it was even typed>
People a lot smarter than me have spent way more time thinking about these things than I have, anything I say is unimportant and probably wrong. It's for the best that none of us waste our time typing it or reading it. Good day.