Always taken advantage of (40f,39m)

Another year older and I realized that I have a relationship that doesnt value me at all.

My SO and i have been together almost 12 years. Not engaged or married. We have no kids together. I have one from a previous relationship who is now in college. I wanted more but also didnt want to carry the financial burden myself again. My SO doesnt even help pay for the dogs expensive up keep. I also pay for storage and extras. And I pay for the truck and rv as well as the rv storage and maintenance. My SO splits the rent and utilities. We share no accounts etc. I am also the one who makes sure everything is paid on time. He still owes me Jan and Feb rent/bill’s and now March is due. But will buy coffee everyday. I am also basically the maid. I realized we have lived in our current place over three years and not once has he cleaned the bathroom. Our sex life is almost non existent anymore. I dont see the point. I get nothing out of it and can be using the time for other things. It be wrong to finally ask what he feels be brings to the table(relationship) because I dont know what he brings that I dont already provide myself.