I lost the house I was renting for 15 years because I was working a full time job and couldn't pay the bills. My 20 year old son was also working a full time job but gave nothing

The title of your post says that your son hates you. You didn't really provide a lot of info. If your son is 20, and not paying rent but living with you, and you lose your home, why is he angry? He's an adult, as are you. You both have to find a way to have a roof over your head. It's not up to you to baby him at the age of 20 any more than it is up to him to help you keep a roof over your head. My take on this, it's time for both of you to grow up.

Sons, plural?
Your 20 year old 'hates' you because you enable him and he has lost self respect. He knows full well that if he had contributed, which he should have, you'd still have the house. You need to spell it out for him in about 2 sentences so he can face it straight on.