I believe Christians are commanded by God to spread the faith, (I'm sure a Christian can cite chapter and verse as to where this is in the Bible; I can't, since I'm not that familiar with Christian scripture.) This is probably the main reason why you're seeing this behavior.
Somewhere down the...
Hi folks. Just a quick note of introduction. I'm WonderGoon (you can call me Goon, if you prefer.)
I look forward to discussing all sorts of things with all of you.
Blessings,
Goon