Is it normal that talking about things/'venting' doesn't help me

I do not understand why people have to be "there for you". In fact, I don't even know what that means. I have no friends, and never share my problems with anybody. I just don't see the point - my problems are of the long-term; talking isn't going to solve the fact I want to die, for example - it can actually make me feel worse when all people have to say is the usual cliches. If I had friends (and indeed, when I had them in the past) they were to have a laugh with; to forget about problems, not dwell on them. I feel like an alien because I do not open up to people. I don't get the feeling of a weight being lifted off my shoulders. Declaring them makes them feel more real and makes me feel more vulnerable.
This also makes me bitter. Someone can say a few words to which somebody else nods along and suddenly they feel better? What kind of problems do these people have, exactly? The short-lived, perhaps.

It's a general view that men are the ones to bottle up their emotions; however, I am a teenage girl.