Revelation 3:15-16 I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot. So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.

God does not want half-hearted Christians. When people claim to be Christians while their actions belie their words, they make a mockery of God. If you are going to be a Christian, go all the way. Do all you can for God. After all, this life is short, and we must make the most of the time we have.