Skip the off-topic parts in parantheses if you want the tl;dr parts
Religion already is, you know it's true. Common sense needs to take over - sadly, quite a few people seem to lack it.
(Before I get hacked on for saying that, let me assure you, I don't mind people who are -down to earth- and aligns themselves to a religion. Like my home towns former preacher, he wasn't opposed to taking a few glasses of wine at a pub during the weekends, never pushed "God" in people's faces and when visiting a late friend of my family at his cabin in the mountains, who said "Well, now I'm not the kind of guy who goes to church very often..", the preacher's reply was "Oh, doesn't matter, I'm sure you're a good person despite it" and laughed. If only religious people could copy his example.)
I assume most things we use widely today will become obsolete in the future.. -if- we survive that long. If we just meld away all those crappy borders and become one autonomous, multi-cultural nation.. (we would stand a chance against the alien invaders when they finally show themselves!)
(In all seriousness though, aliens are more likely than not to exist. Believing we're the only intelligent (a term open for discussion) species in the universe is the pinnacle of arrogance. However, I don't believe they've ever been to Earth, or ever will in our generation.)
Yeah, much off-topic shite there, carry on.