There is a big range of thinking on this in Christianity, ranging from the "fire and brimstone" folks who believe that if you do not claim Jesus as your personal Savior and Lord, and follow Him faithfully, you'll go to hell, to people who believe God will save everyone by grace somehow, no matter how wicked they seem here on earth.
I don't pretend to know- I believe it's not my place to say who God forgives and who He does not.
I will say that the gospels (and entire NT, for that matter) have a variety of remarks on what gets one into the Kingdom of Heaven- including beliefs, thoughts, actions/deeds/works, attitude/character, etc.
I believe for myself that in following Jesus Christ, I am on a path toward becoming more unified with God. Jesus fills the gap between my sincere efforts and my mistakes (sin literally means "missing the mark").
I don't buy the philosophy argument. Accepting Jesus as Lord and Savior, then choosing daily to follow Him, to pick up one's cross and attempt to die to oneself, to let His light shine through into the world... it is not an easy path that one can take as a whim to avoid hell based on a philosophical argument. That is- it is sincere, heartfelt effort and love of Jesus that saves, not hedging one's bets. It is letting go of self interest, not embracing it.
Here again, you'll find a variety of Christian thoughts on the matter within a very wide spectrum of belief. Personally, I do not dwell on what heaven will be like or what happens when I die. At least for me, I received very strongly the message from the Spirit that I was not to focus on my gain but rather on serving others and God. I may be reincarnated or something for all I know (though I do hope for a brief rest in the arms of God!). The point is, I trust that if I have given my life to Jesus Christ and I sincerely follow Him, God will do with me what is best for me and the rest of His creation. And I would desire nothing else, for God knows me better than I know myself.