Has anybody reached a point where you don't care what happens to the marriage anymore? The kind of situation wherein it seems like you're only together for the kid/s?

I think this is a phase that comes in all marriages. For some the phase gets over soon and for some it goes on for long. But I guess, for couples for whom this phase stays, they need to work on their marriage. This is not the time to give on the relationship but a trying time for both, and I feel nothing but only healthy communication can set things straight.