Hi OP. I have been through this. About 7 years onto our marriage (12 years being together).
I was holding a lot of resentment that Everything fell to me with regards responsibility when we had our child.
Also dh had a pretty traumatic job dealing with perpetrators of domestic violence against women.
I was ready to leave. I felt I didn't love him and there just had to be more to life than my fucking humdrum every day the same. Me doing everything, dh coming home miserable.
I felt like I didn't love him and I had to get out. I felt suffocated and depressed. I didn't care about anything except our child.
It reflected in my life with friends and family and I went through a really, really shitty phase.
We did 'split up' but had to live in the same house. Luckily separate rooms and child was only around 4 at the time so no inkling. We were still nice to each other, but I felt like there must have been someone out there better for him and I wanted him to be happy. Because ultimately, he was a good, kind, hardworking person.
He begged me to go for counselling and we did. For 2 sessions. I felt the marriage was done and he carried on with the counselling.
Over time, he realise how much his job affected him, but had zero support. He realised he had detached from family life.
Readers, we are still together, 17 years later and are very very happy now.
If you feel there is still something there, maybe it's worth exploring counselling before you make any rash decisions.
This is just my experience, but in my head, we were done. In his we weren't and luckily it worked out for the best.
Maybe worth a try?