pray for plagues

ever since i was little there's been four things I've always wondered.

1)space; whats beyond what we know?

2) death; for all we know reincarnation could be true. past lives could be possible but we just don't remember them.i just cant comprehend that we become part of the earth when were dead, if you get buried. and heaven?
when i was little i thought it was just on the clouds, and it was our body's still and we just chilled there forever. but now that I'm not so naive, i know that that's probably not the case.

3) words; i know how speech came to be but why? how did sounds turn into words? who made up each individual word to mean its own specific thing? because if you think about it, letters are just noises. words are just multiple noises put together to form something. and why are there so many languages? not saying there shouldn't be but how did so many come to be? its great because it provides countries with more individuality but how did they arise?

4)aliens?; if you think about it,its really ignorant of us to believe that we are the only humans in the whole of space. we haven't even seen all of it so how could we make that judgment? for all we know there's other beings out there saying the same things, that there the only living things.
they could easily be hundreds or thousands of light years away. a distance were not even close to getting to. we don't know how big space is, so we shouldn't just assume things. this also kinda goes with 1. some think if they existed that they'd already have found us because we just assume that there smarter than us. but maybe were smarter than them?

anythings possible. just saying