I have fallen out of love

Me and my spouse have been together almost 10 years. When we met, we met in May and got married December that same year. Both young (20 and 18), but I was joining the military so wanted to be together. 10 years later, we are both completely different people with different life ambitions. We are complete opposites. Different hobbies, different career goals, even complete opposite diets (I know that’s insignificant, just another example), the whole 9 yards. She has also stopped all sexual contact basically, within the last few months. We didn’t talk about it or anything, she just isn’t into it anymore.

Only reason we haven’t divorced before now is we have a 5 year old son. My parents divorced when I was 4 and I said I would never do that to my kids. Only reason I still consider divorce is because I know me and my wife can be cordial and co parent very well. My parents hated each other so my childhood was miserable, me and my wife don’t so I feel like co parenting wouldn’t be a problem. But a part of me just wants to stick it out until my son is 18 then say see ya to the marriage.

It also doesn’t help that we both are interested in other people. Not any specific person, we just aren’t each others types anymore.

Another factor is where we live. We live in a different state from any of our family. I know if we separated she would want to move back to our home state with her family. I love where we live and wouldn’t want to move.

It feels like we are emotionally distant at the least, and feels like we are just going through the motions at this point.

Any and all advice is appreciated. If I’m an asshole for feeling this way, please just let me know.