i have wanted out for awhile now...

I have been married for 5 years now, have two kids, two dogs, and a mortgage. I was madly in love with my wife at first but the passion is gone now. It seems that all we do is argue and fight. The only thing that makes us both happy at the same time while we are together is the kids. I have debated a separation for while now. I am not happy and she could be happier. Sex seems like just sex. We never snuggle or caress eachothers faces anymore. Whenever we have time away from the kids we just go out and get drunk. I miss the days of day trips to the mountains and longing just to be with her. I miss us not being able to keep our hands off of eachother. Is pursuing these wants a lost cause. I feel my youth wasting away and feel like I am going to be trapped for the rest of my life. The only thing holding me back are the kids. I dont want to miss a minute of thier lives. I guess I am just stuck. FML!