other peoples children

two of the guys i throw with have new children.i am quite good with them,they like coming to me and both of the guys wives trust me completely with them. they both coment that i should have children of my own.what they do not understand is that when the 2 boys get fidgety or grumpy or i have to do something else i give them back.it is not the same as having your own children.i may be good with them but i also only have them for maybe a half hour at a time and that is enough for now.