I'd like to think we're not alone as a species & that there's more than just insects, animals, birds, & various plants, trees, vegetables, & fish out there you know. I don't subscribe to the idea of basing an entire religion around extraterrestrial creatures like Scientology does that's too far fetched even for me.
However, I like the idea of say Egyptian pharaohs being so advanced for their time period that they were using symbols, concepts, & mathematical calculations that they would never have known without some elaborate intellectual assistance of some sort. Plus, if most religions are built on the premise of a spiritual deity or supernatural force beyond human comprehension that has the power to heal why would aliens themselves be so outlandish in scope? Plus, not every person who claims they were abducted, placed on a ship, & studied can all be high, drunk, delusional, or simple minded to me.
Rosewell, crop circles, Area 51...X-Files, Star Trek...Science Fiction sells & some of those shows & books are very entertaining anyway.