i think i do. there's a vast mystery that wraps the whole universe and we cannot tell that we're alone.

Oh but of course I do! I'm still waiting for my ship to take me home.

hmmm,
if you count the stars similar to ours in the whole universe then there must be earth like planets near those stars

meaning, we can't avoid getting contact from the "others"

but I'm pretty sure they won't visit us since:
1.)if they were very advanced, they're smart enough to just send robots/drones/etc. to visit our planet since the conditions are here are surely hazardous to those "aliens"

i don't believe ufo, that's just a people who comes from future with time machine or time traveler etc. so they are our's grandson/daughter that's my opinion.

guess what... "no me acredito en las brujas pero que las hay hay" that gives out my feelings about "strange" stuff..

I, in my most deep feelings, wish that aliens would come on earth and help us with climatic changes, global warming, economical crisis.. but that's poetical i think

Yes. I'm 100% sure that Aliens (and UFOs) are existing. (cientists too! - the universe is BIG very very very BIG!^^) But they will not visit us. They wouldn't travel billions of lightyears through the universe just too see the Earth. The will lough about us! ;D

I'd prefer to believe that there are!

Yes, definitely. There are an infinite amount of worlds and Earths out there that can support life. So who's to say that extraterrestrials haven't visited before, are here now, or will drop by in the future?

Well, a UFO is simply an "Unidentified flying object" so I believe those exist.

As for aliens? I just don't know. It seems impossible that there could be such a large universe with only one planet that has sentient life on it. So, maybe.

But if there are aliens out there capable of space flight, why would they spend their time flying around our planet where people could see them?