For better for worse is Christian!
When one gets into marriage one needs to know that it will not just be a bed of roses. Some days, some months and/or some years will be better, when things goes well, but there will be those periods of need, lack, periods of want where one will feel like 'I think I made a mistake by marrying' these are the worst periods in one's life and he/she is not supposed to quit or even think of that when things goes wrong. The vows mentioned that I will have and I will hold onto what I have from this day (wedding day) forward and I will hold on in better days and even in the worse of the worst days, I will love and cherish him/her even when he/she lost an eye, a leg, burnt his/her face and is completely defaced.
For better, worse he/she will be mine. I will not think of divorce because ( Matt 19:8 ) of the hardness of your hearts Moses permitted you to divorce your wives, which was not so from the beginning.