Some of these are valid and common issues. I could have written this exact same post as I'm sure many others could have as well. Really. I could have written your post minus different activities and cities. While everyone plays a role in the demise of the m, you did NOT do this all on your own. I repeat that you did NOT do this on your own.
Every m has issues. Your m, like every other m on this board, was neglected to a certain degree. Lacked intimacy. Kids before marriage. Employment woes. Crazy schedules. We live in a fast paced, instant gratification society. The reality is you fix the things that you need/ want to be fixed and focus on you and your kids. You can go and rehash that you've had a revelation, repeat your post above and not one thing will change. Your h will bring up something else.
I'm not sure if this is very DB but I'm going to go out on a limb. Many marriages have the issues you listed and both parties are happy. Many marriages where people have sex 5 times a week and who have date nights twice a week are unhappy. Each person is different. Everyone has a different mental makeup. I have a feeling your h was going to get to this point regardless of whether your kids slept in another house and what city you lived.
3 kids BD 12/15/13 (IDKIILY. ) Rope dropped Cirque du Soleil style D final 9-9-14 "Some people are born on 3rd base and go through life thinking they hit a triple." Barry Switzer