I wasn't going to post but I just got done counseling one of my Soldiers who just found out his wife wants a divorce (she couldn't wait two more months until he got home from Afghanistan...)
First - I have been married 27 years, most of it while on Active duty (had a break in service in the middle) Do we share the same hobbies and likes - of course not. But over the years with all the deployments we have both come to appreciate the things the other likes to do. I will sit through her Hallmark channel movies and when she is in her sewing room working on some project Ill do my best to sit in there with her to talk or read or something. When I sit out back to smoke she will join me in a glass of wine, beer or something stronger. With all the deployments and training exercises we value our time together - this comes with time and not from being told to do so (and that's from my experience as a marriage counselor). Over the years we have found things that we both like - riding the motorcycle, enjoying music..
What I do tell couples who are going through the growing pains of marriage is to just appreciate each other and respect each other's likes. Spend time with the other in their interests, but also expect the same from them.
The Golden Rule in a marriage is NOT "do unto other as you would have done unto yourself" but is "Do unto your spouse as they need being done unto".
In other terms - if she puts you 100% ahead of herself and you put her 100% in ahead of yours then both of your needs and likes and being met and it feels a whole lot better to have someone who has your back rather than you having to take care of yourself. Of course this HAS to be mutual or it wont work.
It doesn't matter if a marriage is on the door of divorce - marriage counseling always helps, it doesn't have to be about the negative, it can be about "how can we do this better", "we are happy but we want more"....