I do believe you mis-read or i didn't define my point very well. IF your big problem with trying a relationship with a single mom is there will be times she can't act like she is single and you two can't play slap and tickle all over the house whenever the little man down there pops up and says- "it's ME time!" - you might not be well suited for a serious relationship.
I don't know who you run with but if user single moms are that plentiful that poor innocent dudes are being used as babysitters- then someone needs a new circle of friends. On the flip side I've seen men who are not great catches sitting and whining about the relationship they are 'stuck' in when they should be damn grateful to have any woman willing to get at least part way naked in the same room with them.
I have no doubt some men are not well suited to joining a single mom in any sort of long term relationship. I don't doubt some single moms want just any ol' body.
But our single and ready to mingle OP is dismissing ALL single moms out of hand. Sure there are plenty of reasons not to 'risk' getting to know a single mom, the world is full of situations where there are plenty of reasons not to do something, but until you see the reason you are running from ghosts- things you THINK MIGHT be a problem.
My bottomline is if the OP has had a hard and fast rule against single moms, then he really isn't ready for more than lets play house for a few hours. That is NOT a slag, I have a female acquaintance (2 kids) who is fixated on under 25 'boys', she wonders why for all she does for them- and she can do AMAZING things- they don't stick around for more than a few months. I tried telling her a few times and then just gave up and sit nodding as she laments her latest loss- they just are not ready for the ready made family, one woman for the rest of their life bit - to every season and all that...
The OP is young, if he sees trouble before getting to know a person, and let's face it he isn't beta testing ALL single moms, he is looking for/at ONE person, if he just dismisses an entire group of females just because there MAY BE an issue or two unique to having kids around, he should keep walking.
After all, your circle of friends must be pretty small if you don't see couples having those same ahhh discussions and the guy used to being a lot more fancy free now being stared at with cold eyes telling him it is HIS turn to change that diaper and after being cooped up with the blessed stinky bundle of joy SHE needs some out of the house time
Until he can look past the kid and see the woman he just might be spending decades with after the rug rat moves out, he should just stay away.
eace