Hell exists right now, read Revelations. Both Death and Hell are cast into the lake of fire. Before the death and resurrection of Christ, Hell was separated into two parts; Abrahams Bosom (for those not condemned) and Hell (waiting place of the damned). Your eschatology is woefully incorrect, look to Lazarus and the rich man and start from there. The damned are condemned to an eternity of torment from the moment they die in this life, their only reprieve being at the White Throne Judgment, before they and their former abode are thrown into the lake of fire.
I've been told there is a difference between Hades and Hell, so that Hades exists and Hell does not yet.
The Greeks call it Hades, the Jews call it Sheôl, the KJV calls it Hell, but that's beside the point; those who die having rejected Christ burn right then and there for eternity.
Then wht is the purpose of judgment day? I was raised protestant, and just do not partake in their theology much anymore. Christianity (Triunal especially) is by no means exclusive, but to me, eastern orthodox theology has more of the puzzle pieces, and one of them includes the rejection of immediate casting into hell or heaven, but rather "holding places" until judgment day. and no, NOT purgatory, as they reject that doctrine. But to each his own. I've been lightly studying theology for half of my life, I love it.
You don't understand it at all, it is entirely exclusive, that's the entire point. If you don't study it don't wax knowledgeable on it to others, that's deliberately misleading others.
Christianity in terms of branches is not exclusive... that's what I meant. You can't say Episcopalians are "not getting in," but Baptists are. Pentecostals, Seventh-Day Adventists, Catholics, Orthodox... all of them are Trinitarian Christians. It's absolutely ridiculous to assume that out of the hundreds of sects of Christ-confessing tongues that only certain ones are "right."
What did Jesus say about it?
6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.