A life without emotions sounds fun, but it's really not.
Without the sour the sweet wouldn't be as sweet. Take the good with the bad. So you don't click with your family, so your dad's a bit of a weirdo and you dodn't bond with him, so you have no friends right now that you feel *really* strongly about in a good way. So what?? Don't go wishing that you could never feel anything. It might be the way you feel, but you only feel that because of the situation you're in. Wait until you move out, and you make friends that think and feel the same way about you on things, and even some that don't - because friendship is not about having the same likes and dislikes, it's mainly about CONNECTING, on an EMOTIONAL level. If we all had friends that were carbon copies of us, well, it doesn't bear thinking about. I'd be bored out of my skull for one. Anyway, what I'm saying is you just haven't had the chance to connect with someone deeply emotionally enough for it to have a real impact, you're probably lonely, really.
Oh and what others have said - showing emotion isn't pathetic. If you don't do it and have no DESIRE to do it, then don't. But never EVER sit there and force emotion back inside of you just because you want to be emotionless, because you'll end up as one screwed up being with a lotta psychologist bills to pay.