im not sure i can really help as i have started to think like that myself. My personal view is due to what i have been through - i basically dont trust men (apart from my father), i think all men (and yes i know its not all of them) but majority of them are bad - basically i have lost hope in them - i look around and can only see all the bad they do in the world, within our religion and feel whats the point - i will just save myself the heartache.
as for children - i know every woman will one day have that longing for a child - so i think if i get to that stage i will just adopt a little orphan girl (as a woman can't adopt a boy).
you need to find out the reason behind your friends opinion on men before you can help find a solution.