Yeah, you're assuming a lot of things though Bill and most of it benign and positive. Yeah, there's the possibility of life on other planets and yes, there's the possibility that some have been around a lot longer than we have. but there's also the fact that we live on a planet with literally hundreds of other species of life and yet we're the only ones that have evolved enough to even contemplate  space travel even though some of those species have been around for a lot longer than we have.