What Would You Do In This Situation?????

I guess in a way this is a debatable subject, but the reason I put it in this catagory is I would like serious advice from someone who can argue there point.(Please serious reply's only..Thanx). I am 21 years old now and have grown up pretty quick....When growing up I was not around my biological father my mother kept me away from him, for both good and selfish reasons. I say selfish because I was lied to about so many things and a whole nother culture and way of life was stripped from me. I lived with my mom and here husband growing up but spent almost every weekend with grandparents while they went out ALL weekend then when I went back home while they were hung over and drained from partying I had to be quiet and play in the dark cause the light and noise bothered them. Anyway that factoring in with the constant arguing(Screaming, and my mom breaking every piece of glass in the house, no physical abuse except once that I remember) they finally got a devorce after I personally requested it. After that I was the MAN of the house at age 13, I had the resposibility of my 2 brothers father. This meant doing the normal father chores but also I had the responsibility of corecting my brothers(which included grounding them and I even had to spank them on a regular basis.) this lead to my brothers HATE towards me. Me and my mother's relation already damaged from what she'd kept from me began to get worse. We had physical confrontations, I would not touch her but she put me in my place more than a couple of times. During this time I had been labeled the black sheep of the family and was considered a drug addict, gangmember, theaf, liar, and whatever else you could think of. Which most wasnt true yeah I drank and I did hang around gangs but I was not a theaf or a liar or addict I was trying to find the love and comfort I never got(Or is that just an excuse???)I vowed never to be like my parents were and to give my child the best. AT 17 my son was born....My cousin who was closer to me than anyone and who would have been his god father died on november 1st my son was born on november 3rd....I asked why and tried to think god gave me my son to help ease my loss of my cousin. In the past 3 and 1/2 years I have lost 5 people including my cousin one other being my grandmother who pretty much raised me. After all these deaths and me almost reaching the same fate when I was 19 from a bleeding ulser on a main artery, I have begun to question my faith(which I would never thought I would do) but I can only take so much...I have a great 3 1/2 year old son who last december was diognost with diabetes, and I have a 9 month old daughter. We just found out (me and my wife) that she is pregnant again and are expecting another. I have alway been a proud father and husband but I only wanted 2 kids in my whole life and now am faced with supporting 3 children one which needs daily medical care. My reason for writing this is usually I can handle stress real well and help others do the same but I feel it coming down on me and cant handle it much longer. My mother is going to help me and I am going to start going to a doctor. Am I using all this as an excuse to give up????? Or can I stay strong for myself my children and my wife and pull threw???? There are so many gaps is this I plan on filling them in in a later post...Debate:No Matter How Hard We Try Do We Always End Up Being Our Parents??? Advice: I Just Needed Someone To Talk To. SORRY SO LONG.Thanx Camero1198