Our sex lifehas gone up and down over the years.
I totally understand where you are coming from, and at the smae time can see the wife's POV.
For me, I was taking a lot of the mental load and was exhausted. it wasn't that I wanted him t clean the kitchen floor. What I wanted was for him to realise that the kitchen floor needed cleaning.
We found some solutions, we looked at household stuff and I handed some of it over to him, completely, so it became his mental load.
We talked more about other stuff, not related to kids, and not related to sex life, about life, dreams priorities. We rediscovered the adult connection, not just the parenting one.
Ironically it was when we had a REALLY hard time with our dd, that we came much closer emotionally and that spilled over into the bedroom.
Dates are nice, but pointless to me unless you are able to connnect, and often I wasn't ready, and after the stress of getting out of the house, the romance had gone!
My husband also travels, and far from making up for lost time, I find it takes me a while to get back into having him home when he has been away for a couple of weeks, and I am so ready to walk out and leave him to it, but kids come to ME all the time, as they were used to him being away.
So my message would be that you need to reconnect emotionally. It is all about how I feel about how I feel about him, not really about tiredness etc.
On a practical note, once the kids were able to potter downstairs and stick CBeebies on, we found Saturday mornings worked much better than an evening!