What I don't believe is that Christianity is the only path towards God. For many in my own faith, this is a profoundly disloyal statement, and tantamount to blasphemy. I remember saying something like it in a youth Bible study class a few years ago, and the reactions I received ranged from shock, disbelief and even fear.
The absolute worst time to make a decision is when you are desperate. Think about the times when you have been desperate and think about the decision you made. Would you have made the same decision if you held on to your faith? I doubt it.