<font color=lime>On a serious note, why not. Who here really thinks that earth is the only habitated planet out of trillions in the universe? I am not so sure they have visited us, but I find it extremely arrogant to think we are the only ones. </font>

I believe in the possibility of the existence of life on other planets, but I haven't met any so I can't say I 'know' they exist.

I have, on the other hand, difficulties believing that some aliens would travel 50 lightyears all the way to Earth, shove some probes up peoples a$$es, and then fly home again in time for lunch. There just can't be enough up there to keep highly intelligent aliens interrested, can it? Kind of kinky if you ask me.