I think 40's is a good time to start thinking of settling down. By that age, most men are:
1. Still fertile enough to have plenty of children (as long as the wifey is younger)
2. Financially stable enough to properly raise the kids and spend tons of time with them, that is the point of having kids IMO.
3. Mature enough to find the right lady and stay with her (for the kids).
4. Young enough to see them grow up and have their first love, old enough to not see them get divorced!
1. Still fertile enough to have plenty of children (as long as the wifey is younger)
2. Financially stable enough to properly raise the kids and spend tons of time with them, that is the point of having kids IMO.
3. Mature enough to find the right lady and stay with her (for the kids).
4. Young enough to see them grow up and have their first love, old enough to not see them get divorced!