In my eyes i've never really thought about Ghosts and aliens, the only type that exist are scooby doo like ones and in the end always like to curse those meddling kids :). Lol...
Anyway myself, I don't really believe in them, then again I'm not putting down they don't exist. We just may not have seen them ourselfs yet. Lol that last part reminded me of goosebumps special ones where you choose your fate.
In short I 79% agree with Tynan and 21% on Kristen/Evans opinion. If that makes any sense.