I do!
The universe is so vast and never ending that there has to be some other life form out there.
I'm not sure that they are walking among us like in movies, but I think they definitely exist.
of course they exist. with such an insanely huge universe like ours, there's no way at all that we are the only life form. Maybe the other life out there isn't something like we see in a movie, but we just can't really make assumptions because we have yet to discover things like that.