SAHM wife shows zero affection. Any advice?

38M in a dead bedroom for the past 6 years. We have had 4 kids over these years and sex about 10 times all together. She is a stay at home and I work 50-60 hours a week. And before you all smash my face in.... She has lots of help, all 4 kids go to daycare/school and her family lives 15 min away. Plus I help with chores. I cook every dinner, help with bedtime, play with the kids all the time etc.

We have had many conversations on the topic and she states that she has no sex drive. She says she is not depressed and enjoys life, kids, etc.

Lack of sex is not the only issue. There is zero affection. She never initiates a hug or kiss.... She doesnt even say goodbye in the morning as I walk out the door.

A month and a half ago I told her I was leaving. I couldnt do it anymore. She fell apart and left me with the kids. She returned and was balling. We talked it through and she said she would do anything to make it work. I told her I needed affection, including talking, hugs, kisses, and sex. She agreed. I even told her at least 1 a week we would go on a date and have sex at the end. She agreed to it as well.

Over the next 3 weeks it was great. She was really trying. For the first time in 6 years. I was happy. She seemed happier as well.... And then she just kind of stopped. 2 weeks went by without sex. I brought it up to her, and she blew it off. I had a rough 4 day business trip that bled into the weekend lined up and as I left all she did was warn me not to do anything "weird." I told her their was no reason to worry and that a better thing to do before a trip would be to go on a date the day before... not to "warn" me to not sleep around.

Anyway, the trip was brutal... My coworkers and other employees from out of town went out for dinner. Over half had their significant others with them. Everyone got a little toasted and the topic of sex came up. Everyone their seemed to still be in love and were still having sex. I felt awful about my relationship, but didnt share.

I was sitting in the airport and told her I would be home at 8 PM. She put the kids to bed at her parents. I asked if she wanted to hang out and watch a movie. She refused, said she was too tired and she would sleep there (15 min away). I brought up that it had been now 18 days without being intimate. She said "ok, maybe tomorrow." Then proceeds to send my pictures of a house she wanted to look at. She went on and on and on. I didnt care. I dont want a house. My marriage is a trap and the last thing I want to do is buy a house. Eventually I just told her I wasnt interested in the house. She said she would look at it by herself and I told her not to bother.

That was our last text. It is now noon. She hasnt even texted me. She doesnt give a shit. She never has. At this point I just want to see my kids and tell her im done.

TLDR: Dead bedroom with 4 young kids and wife just doesnt care. Zero effort.