My Mom and Sister are demanding that I quit my job and move home?

Currently, I am a single mom of a 6 year old. I have a great job and consider myself lucky to be making a good living and having health/dental for my son. I also own my home and I drive a newer car. My Mom and Sister constantly put pressure on me to quit my job and move 2 states away to a rural area with a 25% unemployment rate. They make light of my job and act like I haven't accomplished anything. They have gone so far as to attack me as a mother that I am being selfish by not having my son live near them. I went to visit a few weeks ago and the entire time they belittled my job and acted like I was a moron. I am the only one of my 5 sisters that even has a job! Am I being unreasonable by not doing what they ask? If not, how can I get them to stop?