"It's my house" kinda long

So my boyfriend and I have lived with his parents for a little over a year. They did charge us any rent to stay with them, but we had to pay their cable bill every month and do chores around the house. Which was fine with me.....until I realized how messy they are. Nobody cleans anything accept for me and my boyfriend. I do everyone's laundry in the house. And it's NEVER ENDING. Literally. I've never had the laundry room completely emptied of dirty clothes/blankets/towels. And if my boyfriend and I are ever on vacation (like a camping trip, or a little getaway) we come back to a mountain of laundry. And the dishes. It's never ending there too, and it bothers me because his parents are always like "DONT PUT YOUR DIRTY DISHES IN THE SINK PUT THEM IN THE DISHWASHER" and then right after they say that they put their dirty dishes in the sink. Or when we go out of our way to cook a nice dinner for everyone and we leave the hot pans on the stove to cool down before we wash them they freak out! But whenever they cook they will leave pans on the counter/stove top or in the sink (with food still in it mind you) for a week, or until WE take care of it. Also his mom keeps everything so it's impossible to clean. There's just so much stuff that needs to be thrown away but she keeps it all. There's piles of papers, everywhere. If we clean of the kitchen table (which is always completely covered in papers) it stays clear for maybe 2 hours tops and then it's trashed again. I also take care of their 5 dogs for they because they don't do anything with them. I take them for their walks. I buy their food & treats. I buy their soaps and bathe them. And never not once do we get a thank you from anybody, instead we get yelled at for "not doing anything" and when my boyfriend calls them out on doing things that they do that they tell us not to do (because supposedly that hate it when people do said things) all they have to say for themselves is "it's my house I can do what I want" it's just really frustrating. I'm so happy to be moving into our own place next week. Am I wrong for feeling this way?