We could ssay boys will be boys. But I know from our sons now all are adults "How do we know you need a hand unlsee you ask"
That is what they say to us now they are adults, so we ask.
Our youngest son is the one most likely to help, our oldest lives some distance away. Our middle son will ask for us to help him but returns the favor when he can. [He suffers a lot from FMS]
But it is hard to ask for help at times we are used to being the parent and helping them out.
It cost nothing to help, but we gain by asking, our children see they can give back to us, so let become the adults we want them to be.