It all depends on the guy.
The guys that are use to getting p*ssy might consider settling down from 25-35.The guys that weren't use to getting p*ssy through high school and college,but after graduating college, getting a good job,and finally having enough money to get their own place.Might decide to settle down much later in life,since they'll be trying to make up for all the p*ssy the never got in their school days.So as I said it all depends on the guy,what he wants,and where he's at in life.