After 12 years of watching X-Files I've still not become 'a believer'. That is, if you're strictly asking about aliens and UFO's visiting this earth. There might be other life forces out there, I just don't believe they've ever tried to visit our planet. I can't for the life of me think of a reason why (and don't start with this colonization stuff!
) and I'd like to believe that if they can find us, we should be able to find them also...and we haven't.