Did you wait until marriage for and how old were you?

Ok so I have been on this website themarriagebed.com and it kind of changed my views about me having before marriage. I would like to wait now, but I don't really think that's possible. I mean I am a virgin at 20 and some would say that I may as well wait but.. why should I? I mean if theres a guy who is attractive and treats me good then why not just do it and get it over with? Who knows when I will get married (hopefully sooner rather than later) but if it is God forbid later then what? I will have wasted my life waiting? Just sounds.. not so good to me.