1) I honestly don't remember what exactly in your comment struck me as pessimistic but sorry if I made this assumption unnecessarily

2) I was not claiming that the 500 people on my facebook are friends, I can count my friend on my fingers. You said in your previous comment something like " everyone looks happy on the surface" and I meant to ask what exactly do you consider the "surface". It was my awkward way of saying that yes, if the surface is facebook, my life does seem like all I do is go on vacation and always have a great time.

3) My original point is that I do share my problems with those close to me, but maybe not the very boring and specific details not with the intention of being controlling or drawing a facade but because it's just plain uninteresting and even I don't really want to talk about it much.

4) I do live in a very happy bubble. I know that many people have problems such as depression, poor social skills and such things (I actually spend an unhealthy amount of time reading about these people but that's besides the point). But admittedly I've never experienced that sort of pain. I have felt sad and had bad periods in my life, but nothing really drastic.

My assumption (or rather my hope) is that while there are many of these people, they are in the minority. And like you said, pain is relative so while someone might feel unfulfilled at work, that person might be happy in other areas of their life.

Thanks for taking the time to write this answer, honestly :)