i must admit im biased, as in my situation, my dad walking out was kind of the last time he evered bother to see me properly, this was about, oo 13 years, im 17 next month

if its genuinly that bad with your wife and youve tried the marrage thearapy and all that shit,then leave, but not to run off with the secratary or what ever she is, will make your kids hate you, and then its game over