I don't think people who choose not to have children are self-absorbed. I think they actually put thought into it. Having children is not a badge of honor - it's a solemn, awesome responsibility that too few people actually have conversations about before actually going ahead and procreating. I commend anyone who chooses to or not to have children - because they've actually thought about it and made a decision rather than just doing it because everyone else is or to fill a void.
I think some people are not understanding what the point of the OP's comment was. Some people can only identify themselves as mothers. It certainly doesn't mean they're better mothers (or worse mothers). It means that that's all they are about. And, when someone questions whether or not there is more substance behind them than just being mommy, they get all defensive rather than really thinking through all the different components that make them who they are.
A previous poster stated that men should be able to care of themselves and the children should be the priority. All the people in my life are a priority (including myself) and I take care of all the people in my life as I wish to be taken care of. It's a gentle give and take and that's the way people who love each other should behave.
This conversation can go round and round and what we get are childish comments about what's in people's screennames like we're back in 5th grade (always cracks me up when adults act like they're 10 while telling the world what excellent parents they are) because having a grown up conversation is too difficult for some.
I believe there are plenty of fantastic, hands on parents who do not have to be so wrapped up in their children they lose sight of themselves, their relationships, their friends, anything, for that matter. I think happy adults who set the example for their children by living their lives fully, with joy and love and without regrets help raise a generation of strong, capable, independent adults who will lead productive and happy lives.