Take it however you want,but your instincts should give you some pretty good warning signals.
Kama u r easy and there is friendship and laughter and you've sorod that ikiumana she is stable and level headed,why the hell not go for it?
A very small percentage of this society is chaste (and note I do not say celibate,thats another issue); personally,I think the maturity and courage it takes to raise a child single handedly says something about the character of the person involved. It may lead to certain affectations that make relationships difficult but those develop of necessity,to provide defence against a cruel world,and if you can earn trust genuinely you could be on to a good thing.
On the other hand,some women who have chosen to have children did so indolently,as a path of least resistance so to put it. You might be advised to stay away in this case but even so remember you are responsible for your environment,& if you think you're strong enough,go ahead and gouge away!
If it worries you that the kids are not yours,remember,even your own kids are not yours. A goat or a snake can procreate,but fatherhood or motherhood is a stewardship,a responsibility for the life of another human being that is far removed from a random response to a lustful urge.
Use your judgement.
Life is complex,it has a real and an imaginary part