Hi.

I'm also unable to work because of my bipolar. I stay home and take care of the house and animals, do the cooking, etc... I qualified for disability and for SNAP so that helps. I also live with family though I do pay rent, for the cable/internet and buy all the food.
I agree if your SO is fine with the situation then don't beat yourself up over it. Caring for a house and animals and everything else I'm sure you do is plenty of work. You are doing your share.
Stop by the boards more often. I just started up and everyone is great. Very supportive and pretty darn knowledgeable too.