I would think that the very possibility of divorce would keep people from getting married. Yet millions of people get married all the time. I mean sure, I can undertstand being in love and therefore wanting to get married, and I can imagine that divorce is hard. But there are some folks who get married and divorced like multiple times.
So why don't those folks just date all the time? Because if you're going to get divorced that many times, then in reality it's just dating relationships all the time that are breaking up, except they're more complicated: you now have to deal with the government being a part of the break-up!