Depressed in 10 year relationship

Some background info:We've been together since we were 17. He constantly puts me down and says things like "why am I even with you" "stupid bitch, stupid whore" He does get physical at times usually he smacks me in the face or chokes me. I make him sound like a piece of **** but he is a good person. He cheated on me when we first got together and a few years back I found some sketchy things on his phone "backpage prostitutes, craigslist casual encounters, and plenty of fish". I decided to get revenge and I cheated on him( I never had sex with the guy though, I dont have a reason to lie about that on here. Not like you know who I am!)

Heres me question:

We recently moved in together, he didnt seem like he wanted to but he didnt really have a choice because he was kicked out of his parents house and had to find a place to live. He makes really good money but blows huge amounts on pot( he smokes like a 100dollars worth every 2 days- thus getting kicked out). Financial issues come up because of this. Since we moved in together I feel like hes letting me down and its nothing like I thought it would be( we've been together a decade I didnt think our relationship would be much different). We dont have sex near enough( in my eyes, he thinks we do). Once every couple days or so is not enough in my opinion. He acts like its a chore a lot of times and I cant get into it because of that. I feel like everything is one sided. I am the only one taking the trash out, buying groceries, doing the laundry. He doesnt help with any of these things. He pays his half of the bills and thats it.

I feel really unwanted, taken advantage of and I dont know what to do. I know "end the relationship!" is what everyone I know would say but I lost my virginity to this guy and spent 10 years of my life with him. Does this relationship even seem fixable? I dont get why he is with me if he seems so disinterested. I have started to pack up my things and leave while he was at work but he came home and stopped me and begged me to stay. So whats the deal ? Should I just give up and leave, its getting to the point where I am completely miserable and depressed.