Your extended family realizes that your parents won't be around forever, and I assume you realize this as well. They may be concerned about what will happen down the road and if you can be truly self sufficient. Even if your parents left you a free and clear home at some point, could you pay the taxes, repairs and utilities?

You say you have a university degree? Who paid for this? Do you pay on a loan?

I am not judging you at all but simply pointing out why family might be a bit more distressed about you not being employed. There is no need to cut them out of your life or fight with them. Just give them a case of canned organic veggies apiece for Christmas and try to love them despite personal indignation.