Single and unsure

Sooo I've been single for a while and my bestfriend says that someone my age (25) should start seriously "dating" (I mean, I will go for a free meal, but that's all LOL). But to be honest, I don't find many men to be attractive or interesting. I often loose interest quick and just disappear on them. Is something wrong with me for just wanting to be single? Don't get me wrong, I would love to have a man, but at the same time I could care less. Men can be such a headache and I don't want the commitment, of any kind with anyone right now. Can someone offer me some advice or at least tell me if I'm not normal?