My buddy did it (he was cracked out)... Left his stay at home wife and 3 kids (1 of which wasn't hers) while she was with her family on vacation. Then he maxed out all his credit cards (bought himself a sweet plasma no joke), pre-paid for an apartment, called a lawyer and filed for bankruptcy. Complete tool. When he got up the guts to call her, she had turned the child that wasn't hers over to foster care. He called her "selfish". Fast Forward 6 months, they are back together.
I say you man-up, take your skirt off and find a real way to cope. We all feel like hitting the door once in a while. I could partially understand leaving the wife, but how can you quit on your children? Then again, if you are that weak, maybe they are better off without you. If you are seriously considering this, it speaks volumes about your lack of manhood and upbringing.