Should i leave my hubby for 7 years?

my hubby and i are great when we are together but he lies too much he"s a good father and a good friend ,but sometimes i feel lonley because lateley he's always working from like say 2pm till 10 pm. Iwont c him well talk on the phone and hell say babe im coming home but never does then after i talked to him 2 hrs p and ill call and he'll ignore me all night,i know the bars and clubs end at 2 am ,that will b the time he will answer me finally all drunk telling me he loves me not to think bad of him ,that he was just drinking and stuff,but then when he get home he has new clothe's on and when he does get home early ill b cookin and he'll go shower and get dressed and flush him self with colonge and ill ask where th f** r u goin and hell b like oh im going to play cards. i feel like im wasting my time he gives me everything buys me eveything but matierial aint nothin 2 me i just want love we got three kids and going on our 4rth.after he comes home drunk ill save him a plate of what i cooked and hell say he aint hungry so y cook then? i dont know what to do i told him hes always out chillin and working not even resting at all and that i want him home more then hell say i need money i cant b home all the time i have to work but then if he aint got time to b with me y he got time to go chill with his best cuzin and drink go out to clubs? i omly c him drunk at night i even called him a part time man and he gets mad and tells me he lives with me why i worry so much im his wife and he dont care about other females. but what should i do i already tryed letters and virbal warnings and nada!!then he says "oh im not drinkin anymore or i'm not gonna chill nomore im gonna b with u everyday and that never happens.he even said when i give birth to my baby boy he's gonna be home but this is not our first child so i dont think it would change he says he goes out alot because when the baby comes out hes in with me at home but i dont believe that plzz help advice someone!!!!