I have a wife and 3 kids (5,3,1) im 26 and want to runaway?

I've been married now for 6yrs, since i was 20. 6yrs later i have 3-kids (5,3,1). My wife drives me insane. She is a cl A 'female dog'. B4 my wife i had with 1 other person. i work 40-50 hrs per week and i come home to house that's a mess, i get third degree questions as soon as i get in the door. I just want to be free. Live a life i was going to b4 i got my wife pregnant at age 20. The kids i love to death, but i just take their crying, whining, kicking, screaming, everything anymore. The wife and I have money issues, were going thru bankruptcy while still trying to keep the house and car. My wife dont work. The only place we have to go is getting worse. There is no light at the end of this tunnel. I dont know what to do. I have thought of everything, running away, suicide, i have thought of ways to do it, but nothing more than a split second thought. everyday i find myself at home again and the day starts over, sometimes worse or even, but never better. I am a kind of person that tries to find a goodness, find a light, but the situation im in. iam running out of patience that i have held for so long, i dont know how much longer can keep quid pro-quo....Does anyone have any suggestions or nething to keep me afloat???????