This was beautiful! Thank you for writing it. Your observation about families not always being biological and houses not always being home, is succinct and brilliant! Check out the book Families We Choose by Kath Weston. I think you’d like it.
Perhaps as you grow older and establish a firm foundation for yourself — a family and a home that are separate from the ones you grew up in — it might be easier for your parents to accept you for who you are.
People change with time.
You will. They might too. :-)