To traduce roads that some have used in their culture in their attempt to not only live, but live the just and moral and self empowering enobling life, is well, foolish. If one believes in Jesus, and trusts what he says, then to say otherwise would be, well, foolish :-)
It is not being kind to a Buddhist to tell them to just continue to do what they are doing, and they'll be just fine, if you believe the opposite to be true.
Lot's of moral, well intending, GOOD people may well not live eternally with God, if what Jesus said is true. You don't get there by trying to be good enough. It's not possible.
That attitude exemplifies about what non believers find annoying about some Christers. Their Hubris is simply too noisome to bear, absent removing oneself to effect sufficient distance to achieve the salubrious benefits of the resulting space assumed to allow the fresh air to rush between.