A couple's marriage is crumbling due to a Hummer: Who should give in?

That marriage was crumbling before the hummer came into the picture or the vehicle issue would have been settled before the purchase.If she is angry because they can't afford it, then he should give in. But if she's mad because he is paying it more attention than her, then she's in the wrong. I guess they each need to ask themselves which is more important. winning the argument or staying together.