You appear not to be seeing the difference between trying to understand something one doesn't have direct personal experience of and not caring to try. I don't have kids and am presently unlikely to, however, I quite like children and think I have an OK knowledge of how to interact with them (I generally get on well with them). That's quite different to, say, hating children and finding them unnerving. In the former case, I think it'd be absolutely fine for me to want to work with the children; it might not be a very good idea if the latter was the case.

I'm not suggesting people should be prevented from political office if they lack certain qualifications/life experiences, but I think it's quite valid to suggest that a person who appears to have no interest in understanding what life is like for the majority of their electorate is probably not best qualified for the job.