I'll give you an example, I have a friend of mine whose parents take good care of him. They all have a great relationship, so it's fine for him to live with them well into his thirties.
I've also met the reverse, someone who has a horrible relationship with their parents but still live with them well into their twenties, even after the parents repeatedly try to kick them out. After a ton of thought, and a bit of emotional maturing on my part, I stopped feeling sorry for these people. If your parents no longer have the capacity to care for you, figure something else out.
You don't have a right to sit up and demand someone take care of you. This is my biggest red flag with dating, if you feel that level of entitlement to your parents, you'll feel it towards everyone else.
My childhood was a living hell of evictions and other chaos, the best day of my life was when I got my first apartment. I couldn't wait for adulthood because instead of waiting for these grown ups to the side to pay a cable bill before rent, I could make those choices.
I think everyone should strive to move out in their early twenties, and I won't really go out with someone who doesn't have their own apartment and a job.
Luckily since I left LA, I've had no trouble meeting fantastical folks with great careers. Most dating/ socializing advice is absolutely useless since it won't mention how important location is.