I was taking issue with the specific idiom used. "Biting the hand that feeds you" often carries with it a moral dimension, and is usually used in cases where you repay kindness or generosity with some kind of bad behavior. If your employer hires you in exchange for a compensation package, they typically do so because they calculated that your labor would provide them value above and beyond what they are paying you. It's not kindness, it's not a gift, it's not to be compared to a master feeding his/her pet dog because of love.
edit:
I'd again suggest another perspective in response to this sentence:
> Every bit of money, and everything I've bought from it, has been from my employers, from pizza delivery to robotics.
Your skills, your time and your (presumably) hard work were the source of value that you provided to your employer in exchange for money and benefits such as health insurance. I don't know your specific situation, but maybe it's possible that you could choose to provide them to a different employer, maybe for even more money.
Notably absent: an answer to these.