Anyway, if I were sitting merely in my lab I would have by now gotten the absolute feeling of being anti-social and non-communicative. Meeting many friends and having a great time with them in my spare time proves me wrong here - what a blessing. So I've come to that conclusion that after having finished my PhD I'll go for a job where I won't sit in front of a PC staring at the screen and dealing with the same kind of people all day.
Most probably you've got a strong personality the others won't respect . Nobody ever hits a dead dog. Although I wouldn't communicate it this way to my colleagues, I wouldn't try to make too "nicey-nicey" with them and undermine my personality this way. I'd rather draw reassurance from the fact that I've got a whole bunch of friends outside of work I can get along great with.
PS: I can not see why msg's are limited to 200 words only in this forum when it's for the sake of people's wellbeing.

Hey _despair_, take it easy and don't worry too much about it. I've also decided to go for a PhD in my home country after having spend quite some times studying abroad. At first everything was alright, but after some while I gradually realized my colleagues and I are living in different worlds. Meaning although we're speaking the same language, we have a different sense of humor. Whenever they sit together with coffee talking for hours about topics which, in my opinion, do not change the world a single inch, I immediately get the feeling of wasting time with them when trying to join the communication. I must also say that I'm doing a PhD in the field of Engineering, so maybe people in this field talk more about the inside of their "box" than others.