You Dad is allowed to sit around all day because he's worked his whole life, provided for you and is now retired.
You're 23. You're just starting out.
They are probably worried about your work ethic. They may not understand.
And also, they may wish to have the house to themselves a bit more. To some extent, they've done their time with you, they were once a couple before you arrived, perhaps they just want a bit of time to be by themselves. It's been 23 years now.
it's not that they don't love you, but we all need time and space.
Not having had children, you couldn't begin to understand the impact that having a child has on a relationship. Many parents split in the first year of a child's life and you're one of the lucky ones because over 50% of marriages end in divorce.
Just give them some space. And yes, they'd probably like to think at some point, you're going to move out and get a place of your own so they can finally have that feeling of complete freedom.
I love my children very very much and I don't want them to ever move out but I also know in my heart that they need to find their own way and become independent, fully independent of me, too. And yes, it is nice to feel that you've got them sorted, in a relationship, settled with a place to live, maybe a family of their own...working a job that fulfils them hopefully.
Remember they do care, I'm sure they do but they are parents and they just worry about all the things I've listed.