Why is it?

Why is it that because you leave you aren't suppose to be hurting?  I left my husband because I couldn't take it no more.  You never knew if the bills were going to get paid.  He was the major money maker in the home but spent more then he made.  We lost our house in December.  He wanted me to come home at first but what was I going home to?  The house isn't ours anymore and he has to get out now.  So if I would have stayed I would be looking for another place by now anyway.  I couldn't trust him in what he said because he lied all the time.  All his children have mental challenges due to their mother and I was always running them back and forth from doctor to counselors and everywhere else.  I really didn't mind doing this except while I delt with their needs he did nothing.  Then after I told him I was leaving he filed for divorce before I would leave the house.  He is claiming cruelty to the kids.  How dare him, I took care of his kids for 7 years and now after I start to leave he wants to say I was cruel to them.  I have tried to stay friends with him even after I found out he was cheating on me.  I think he has more then one girlfriend and one is his exwife.  I think that one hurts more.  Don't I have the right to be angry and hurt with all of this?  Just because I was the one to leave why should I still not care and be hurting this way.