I am literally going crazy in my own home. My husband and I got married a year ago and have been together for 3. Currently he has a 19 year old deadbeat son, who works a part time, low wage job and doesn't contribute to the household financially or just in general but instead sits around on his ass, eats all the fucking food and plays video games all day. He's also extremely immature for his age. Has never had a gf, his only friends are on the screen. He does nothing socially and has a very odd attachment to the dogs. He also does weird random things that I believe would qualify him to be on the spectrum but my husband and his mother said he was tested when he was little and he doesn't have it. So they just ignore it and think it's normal.
 

My stepdaughter is 16 going on 30. She also doesn't know how to clean up after her self. She has a cat that I can't stand and we constantly have to tell her and her brother to do things around the house. They are the same expected chores every week but still we have to tell them over and over all the time. She also plays video games all day like her brother and when she's not doing that she is constantly complaining about random shit---like all day. It's always something. She is not very kind to my 8 year old either and that makes me nuts. My son is young, impressionable but kind and funny and I really don't want him to be anything like my husbands kids. I hate the way they act, how they view the world, the entitlement, the I know everything attitude, and just their general outlook on life. They are miserable to be around because of the constant complaining about everything. I almost had a complete breakdown and had to start going to therapy because I was feeling like I didn't even want to be in my own home. When they are here I just stay in my room. This is my fucking house and I feel like I've completely lost my space and my peace. 
 

My husband helps around the house so that's not an issue. The only problem is he's all bark and no bite which also drives me insane. He doesn't make them face any consequences for anything. 
 

I'm just rambling at this point but im just so annoyed and over it. When they aren't here I am so much happier and i actually look forward to them not being home. I wish they would go live with their mom but she's a freaking train wreck herself so it's just a lose lose situation. I try to show them how to be empathetic, how to treat people, how to take care of a home etc but nothing. There's no interest there no fucks at all. 

what do I do?