Okay, so your family of six is living in your parents' home? Does your sister or do other family also live there? To what extent are y'all helping pay the bills? Are you the only one who does housework (including meal prep), or does your mother still do a lot of it? Before you moved in, was there a discussion of finances and housework?
You said that they need you--why? Are you living with them for their benefit or your own? What would happen if you moved out--both for your family and your parents?
If y'all are not pulling your weight in both financial and household work, your parents have a valid point. If y'all are, then you seriously need to consider moving out and living as a nuclear family, not an extended one. At the very least, you and your dh need to have a sit down with your parents and discuss living arrangements and boundaries.
You said that they need you--why? Are you living with them for their benefit or your own? What would happen if you moved out--both for your family and your parents?
If y'all are not pulling your weight in both financial and household work, your parents have a valid point. If y'all are, then you seriously need to consider moving out and living as a nuclear family, not an extended one. At the very least, you and your dh need to have a sit down with your parents and discuss living arrangements and boundaries.