I turned down a day with my kids...

i was supposed to see my children today, but after last night, i didnt want to.  i feel like her family hates me and always have.  They treat me like crap and always have. I have tried to explained to them that when sarah does this, they treat me like shit.  I know it is their daughter, but they say things that purposly hurt my feelings and they do not even care about how i feel as a father to my children. Going over to her parents house intimidates me and makes me feel like shit.   i am trying so hard to show her the changes, but she doesnt want to see at all.  I know they are for real this time.  I am so upset with her treating me like this all of the time.  She leaves me like clockwork, but yet i still love her so.  She acts like she doesnt want me to be anything in my childrens life anymore.  She will not even talk to me about important things, like our bills, the children, or the future.  Its as if she never loved me at all.  I just donw know what to do anymore with all of this.  I do not want this divorce, but am already starting to let go.  I don tknow if i can be married to someone who is this cruel and harsh towards me.  She has always been this way towards me when she gets upset.  Why me?