Im 35, and enjoy the benefit of not being settled down. The freedom you give up when you settle down......its up to you whether its worth it or not. For me it isnt worth it. Looking at the way relationships/marriages are now.....a commitment these days is usually a solution to a socio-economical problem. Even with that said, there is always the chance of a divorce and being financially crippled by lawyer fees, child support, etc (women usually win at that game)
Remember they (women) are the ones on the clock to reproduce/raise children etc......If you are single, no children, educated, a good career, etc...there is no reason to settle down unless someone comes along that is a no-brainer.
Enjoy yourself, go out, travel, see the world.....I spent most of my 20s going from relationship to relationship and sometimes I do feel like I missed out. These days I am truly grateful for the freedom I have.