I get tired if I stand and talk. That is pretty inconvenient since I lecture for a living. I got a tall chair to sit in while I lecture.

As far as people getting mad at you because you don't want to talk to them while you cook them food, well that is annoying. They need to chill out. If you let it make you mad, it will make you feel worse. Can you just keep working and ignore them? Or answer in monosyllables? Or give them work to do?

My husbands grandparents had a nosy neighbor that used to come over to their farm and criticize the way they did everything. The garden was too weedy. The fence didn't look right. The leaves needed raking. Granddaddy decided to quit taking offense at it. Instead, when the woman came over and started criticizing, he handed her the rake and told her to help. He actually demanded that she rake. It didn't take long for her to find another way to entertain herself.