Although I see barely a connection between these two topics, i'll bite.

Aliens, in my opinion are a certainty.
The Universe is too big, too random and too old for there to not be life somewhere, even if it is only in the form of bacteria.

Big foot, on the other hand, represents a superstition.
Although it could be real, I think it personifies a myth much like Slender Man, passed down through generations combined with faked or misinterpreted reports and video recordings which have molded this, albeit fictional, character.

Big Foot, I don't believe.

Aliens, I'd have to say yes.
Think about all the different planets and how huge space is.
We haven't explored anything yet, I think there are certainly other life forms that we don't know of.

Big foot? No.

Aliens? Yes. Probably even in our own galaxy.

The Milky Way is incredibly vast, say if .0001% of planets are capable of harboring live, and if theirs 500 billion planets that's still 500 planets. While 500 sounds like a lots it's still only .0001% it would be like going to the beach and trying to find one specific grain of sand.

^ those are just random numbers btw.

Aliens, For sure.

Big foot. Naw

Bigfoot: Hell naw

Aliens: Well if you believe that the universe is infinite as many theories suggest so, there must be more life somewhere. The universe is just too damn big for there to be only one planet with life.

Bigfoot- Hell Yes

Aliens- Hell no

Bigfoot, i dont believe. Aliens i beleive yes because with this gigantic galaxy, and universe that we are unable to explore, anything is possible.

I do believe in both myself

Aliens- Yep there has to be something else out there
Bigfoot idk my mom swears on her life that she seen him near a river when she was a kid.