Yea, dont get me wrong I think that being a childless woman in your 40s is particularly rough but I don't think it is easy for men either. Loneliness really starts to set in by that age.

Childless != lonely, or not having plenty of social contacts. Having kids tend to force one to deal with a certain number of issues which requires socializing of some form, so it may help for those that aren't naturally outgoing and sociable people but beyond that not so much IMO.