For Social party or Dancing?

Night club which is magnet for young man and woman is gonna exist 4ever. But what for? Sadly, I've never been to there 'cause most of the night clubs are prohibited to let under 19 person enter. So I don't know the reasons of it but can guess them. First reason is definitely dancing to lovely music; electro music and so on. It probably makes you put your hands in the air and being high even if you feel depressed for something. Second reason may be picking up a girl or boy. It dosen't mean I accuse of such a people though depending on degree. Actually it seems natural to speak to someone 'cause we share same time, wanna have a good time and have same or similar interesting of music. Yeah, as you know, MORE OR LESS. I hate peopel who come ONLY for picking up girl or boy and try to speak to persistently. If I were there, I'd say " Get out of here!!!" hahaha :) It's too much to say, isn't it?
At last I'll be 20 years old in this week on Friday, so this Saturday'll be my first time to go night club. I can't wait anymore!!!