Hello tntchao,
I am sorry for your pain in this situation

.
Many times i have asked myself this same question," why should i try?" , In general situations of my life.
Now, i dont know all the circumstances surrounding your marriage , nor do i intend to advise you on your marriage. For that is between you both and God. Counseling works wonders, but if the other party is not willing... well, it is out of your power and try your best to rest it in His hands and know that God is in control. That might mean that things dont go our way. Anyways im running off of what i wanted to type.
We should try, in any situation, because it is the right thing to do. Because we are not just doing it for ourselves but moreso for our Lord. Because it is not for our selfish gain that we try to do things , but out of our love and adoration for our God to do His will in every situation. Does that mean it willl change the outcome of the "situation" , no, not necessarily.... but it changes your relationship to be much more closer to Him.
I am praying for your situation.
God bless
♥Jill