It's so weird to read the comments that posit this as quality time OR sex. Why is it a choice? It's not like the typical couple is spending hours every day having sex. You can easily spend 1 hour on decent sex and still have the whole day/night to do other stuff. It suggests that a lot of these guys have Madonna/Whore complexes and lose sexual interest in their partners because in their minds, sex is porn and strangers, not a loving partner they enjoy spending time with.