@EmbraceThePain recently asked a question here Do you think conservative men have better family values, take dating, marriage, and having children more seriously as opposed to non-conservative men? to which I wrote a rather long response so I figured I’d just turn it into a MyTake too.
I’m not aware of any particular study ie demographic research that broaches the subject so I’m purely guessing here, but I think that there could be something to the idea that more conservative men (on average) take dating, marriage, and child rearing more seriously than their more liberal peers. I think this because of several reasons of which I’ll briefly list a few.
1) Conservatives tend to espouse a desire to “conserve” traditional norms in regards to dating and marriage. Is the belief that dating is for the purpose of finding a spouse and marriage should be between one man and woman “till death do we part”.
2) Conservatism is correlated with higher rates of religiosity and inversely liberalism is correlated with irreligiosity. This would understandably lead to a gap in certain norms as the largest religions have explicit regulations against divorce.
3) Conservatives have long been against the invention and promulgation of contraceptives and other birth control methods ie abortifacents. Most recently many conservatives have loosened their animus towards these birth control methods due to a shift in focus towards abortion itself. That said the vast majority of the anti-birth control movement finds itself on the conservative side. Ie Catholics still believe birth control is a sin and the famed mother Theresa spent much of her life fighting against the spread of reproductive control to places like Calcutta, India, Ireland, etc. In contrast liberals have fairly steadily been in favor of reproductive planning. I suppose the question of “do conservatives take having children more seriously” is then a matter of perspective. As a more liberal pro-family planning guy I consider my position to take having children more seriously in that you shouldn’t have children simply because you can’t withhold your sex drive, but rather you should carefully plan out when and how you want kids. A more conservative fellow may think that because these methods (barrier contraceptives and abortifacents) prevent the birth of a baby it’s taking our duty to propagate less seriously (or something to that effect help clarify if you’ve got a better version of the conservative argument here).
As for the broader question of “family values” in general I’d need more specifics on which values. If it’s on the relative value of ones family I struggle with seeing any reason for a notable difference between conservatives and liberals. If it’s on the value of siring kids and having a family (ie getting married) then there’s probably a notable distinction.