Let me add my two cents in the form of another question.
I agree with all of you that being namazi may not make me a better husband so in a way that should not be the requirement of my wife. But lets say that definition of a better hubby for my wife is the one who goes out to parties with her or spend lots of money on her. Still, because she loves me, she knows that these things will not save me from hell fire. My namaz will. At that time, is it ok for her to put her criteria of a 'better husband' behind and encourage me to do 5 times prayer.
I mean, if she loves me really, she should be more worried about my better akhirat than worldly pleasures.
Too religious for some of you???
Its ur niyat thats more important more than the action...
If the niyat aint even there to please Allah, then the wife or hubby making their spouse pray dont mean a thing