i want to leave my husband..

ever since we got married its been nothing but pain for me.. the only good thing is that i had my son and daughter other than that everything makes me unhappy.. finances, relationship, his friends, church, his family, no sex life, his porn usage, lies, hiding things! i have been there for him in so many stuff but i feel that i am breaking! He has had everything from me and my family (mom,dad,sister). in about 2 weeks we had planned to visit his family in mexico and coming back i was going to help his get his green card.. but i cant help but feel that if i do that for him i know i will regret it.. because i give so much to him and he gives me nothing but tears ..