Spiders really creep me out! It doesn't help there are over 45,700 species and 113 families!
That is very gross. I do not like them either.
Yes, they can breathe air, and have 8 legs. Not to mention they have fangs that inject venom!
I am mostly creeped out by the ones that have little pinchers.
It's strange how no spiders have antennas, like insects do. 
I think all insects are gross. Those little centipedes really freak me out.
Yes, I don't really like any insect, to be honest. However, spiders are actually found all around the world, except in Antarctica. They can establish a colony everywhere, except air and sea colonies. 
That is very true.