your hair looks great either way - but sometimes we need a change. since you've always had curly hair (i'm assuming), why don't you go straight for awhile. like you said, it will grow out.
My hair is just like yours (even same color)! I would keep it curly and just invest in a really nice CERAMIC flat iron. That way you can keep the natural curl, but have it straight for special occassions (so you don't damage it). Works for me.
I have a friend that gets the Japanese straightening done. You just have to make sure you're going to a reputable place, so they don't mess up your hair. It's really expensive, but it lasts a long time. Do you know anyone that has gotten it done at the place you might go to?
Maybe he really likes it both ways. So wear it as it suits your mood. Sometimes with my wife I have a preference and sometimes I like it anyway. Don't assume with your husband. I took my wife to Victorias Secret the other day to buy bras. We were there about an hour trying on this and that. At one point she says - sorry I am taking to long to do this...and I am thinking "Whhaaaat? I am sitting here watching your try on lingerie. WHat else do you think I want to be doing?" Unless he has his face buried in the newspaper and does not even look up at you when you ask him, it probably does not sincerely matter either way. You are doable either way.