Slappy, you know that 50% thing is a myth, right?
I'd have to go hunt down the stats again but I remember that for college-educated people about our age (you're younger, but roughly), it was more like 20% divorce rate (80% success rate).
Found it -- it's 16%. And the rate has been trending steadily downward -- that is, more people who get married stay married.
http://www.able2know.org/forums/viewtopic.php?p=1962285#1962285
Not saying that marriage and children is for everyone -- if you don't want to get married and you don't want to have kids, your prerogative. But don't base it on a myth.