A married man or a single man just presents a different targeting strategy and demographic profile. Many women have a more positive image of married men as desirable - you can use that in your favor.
On the other and...
Strangely enough, some guys want to be saddled with more children to care for and deal with a wild baby mama. It appears many women these days still want children but don't want to get married, either. Hence, the best prospect for them is the retired and wealthy pro athlete - good genetic profile for your son to inherit, plus high child support is possible if the sucker hasn't wasted all his money yet.