Not in love with husband

I have been married for 2 years but with him for almost 7 years. Our first year together was pretty great but after that it all went downhill once he started a new job and I deployed overseas for 8 months. He has a low sex drive so we don't have a lot of sex, we argue alot. We went to counseling and we came to the conclusion that we married out of convenience. Which explains why we have little passion for each other. We are in our mid thirties and I thought we would have kids by now. We have a hard time working through things now...can't imagine the added stress that kids bring. I am trying to decide if I should keep on trying to make this marriage work or is it better to go our separate ways and find someone more compatible?