I agree with what a lot of the other people have said. If you are deliberately wanting to provoke/hurt/upset the other person, then you are mean. If you're being honest, and you happen to upset them in the process, then that's not mean.
In your example, you said something to someone and they got upset. Well, next time you have a similar conversation with that person, you'll know what to say (it's OK to say nothing, rather than say something, now you know that the only 'something' you can think to say will cause more trouble than its worth!)
QUOTE(bobziekins @ Aug 20 2009, 10:21 PM)

I think I'm a people person

Does anyone else get this?
I am definitely someone who would say I love being on my own. I'm not a good socialiser, so being on my own prevents the stress of just having to deal with other people (like, you know, talk to them and stuff; yes, including family, people I have worked with for 10 years, etc).
Having said that, a friend of mine who is on maternity leave came in to the office on Monday, and we had a good chat over lunch time, and it made me realise that I do miss having someone to talk to in the office. So obviously being completely on my own for ever is not something I actually want, even though a lot of the time it feels like it would be lovely

But it goes to show that people are different, and you'll probably find that at different times you want different things, at the moment you much prefer company, you may find one day you like a bit of peace and quiet, but in the meantime make the most of socialising as you enjoy it