would u stay for the kids sake?

my husband is not happy in this marriage, im personally not happy too, but i cant find the courage to leave. he, on the other hand, only stay for the kids. he said he doesnt want our kids to end up like him w divorced parents. he said after our separation which was 2yrs ago, he no longer see me the same anymore. when he couldve told me that instead of begging for me back before i went back and have kids for him. i feel like were roommates, we dont talk to each other much. just a lil chit chat, then hed go to his phone, hes on his phone 24/7. he used to was a really affectionate person, but he stop being affectionate when he lost feelings for me in just 4yrs. he became secretive w his phone when he wasnt before, but doesnt want me to be secretive w mine. i feel like hes living another life, and im only there to be his maid and take care of our kids. i still love him, but he obviously dont.