Should u take a habitual lying, cheating husband back?

My husband and I have been married for six years. When we first got married, he had a girl pregnant and he claimed that it was not his child. ( I believed him) We had broken up for two weeks, and when we got back together, he told me she said she was pregnant. After the wedding, only wore his wedding band for 2 weeks and then pawned it. He started staying out all night so after two weeks of marriage, I moved out. We got back together and everything was okay until the young lady had the baby and he texted me from the hospital saying " IT'S A GIRL". I called back and the young lady answered and said "he's asleep". Since, he always put the outside child before me and my children. ( whom ae not biologially his) We have spoken to several family members, spiritual advisors, who told him that this was not proper. I have caught him cheating over 10 times. ( and even caught a woman driving his car picking him up from work) He constantly lies about the smallest of things. I have a son who he has never taken time out with( only when its convienent for him) or when he's tryig to win me back. He is 8 years younger than me and clearly was not ready for marriage. I have tried dating other men when we were separated but they all end up to be the same. He told me that he was'nt in love with me anymore and that we should both go our separate ways. He later recanted, stating he was just upst when he said that. ( he had just finshed begging two days prior to move bck home) and once he saw that it wasnt going to be that easy to just vome back, he tried to hurt my feelings. I recently filed for a divorce because I was just at my wits end. Being with him has depressed me and made me sad. The is great, the best I've ever had. He has horrible communications skills. He has absolutely no accountbility. I try to understand his background and upbringing as a youth to give me more insight into why he is this way. I still love him for some unknown reason; although I am extremely bitter. I feel like he takes me for granted until he sees that I'm fed up. we have gone to counseling several times. I recently filed for a divorce and he refuses to sign ( over a month ago) I dont have the resources to afford a divorce on grounds or a contested divorce. He professes his love for me and says he wants to renew our vows. He says that he is willing to change and start anew. I feel that this is another one of his ploys to kep me bound/or attached to him in some way> most of the things that i have accomplished in my life have been by myself with no help at all (moral, financial,moving) from him I am currently unemployed to do a health condition. I have no family here and its really hard with just the kids and I. Neverthelss, i am actively seeking employent. My husband makes over $1000.00 a week and states he will pay all the bills. I was thinking maybe i should take him back and take some of the financial burden off myself and finish school. Im so torn.