The benefit is that I realize my time being single should be cherished and not rushed. I see married couples who seem like what they're doing is hard work and all I have to do is pick up a phone to end my relationships (C) Louis CK. It's not that I think young married couples regret getting married or they don't love each other anymore, it's just that I think they realize they had more time is all. When I talk to them about the "single" things I'm doing, I can tell they miss "the life". Just because someone is 30 and single doesn't mean they have to marry the next person they meet. That's how the old school wants us to feel.
It also doesn't mean that I'm still a little kid because YOU already started a family. We are not losers wasting our time. We are still cultivating ourselves through our experiences and dating a different woman each week plays a part in that.
BTW, I am mainly talking about those people in their late 20s who get married to someone they've known a few years because it's that time to settle down. I'm not talking about married couples who've been together for 5+ years before officially tying the knot.