My parents do stuff like this all the time. In fact just now I got in to trouble for not wanting to do the family grocery shop today. I already have house work to do plus I am going out with some friends later. I get overwhelmed easily and I don't want to be rushing around trying to get everything done. I'm tired and depressed and I just want to try and relax and enjoy my weekend. Aparantly this makes me lazy and selfish.
Basically I know how you feel and I hope you're able to feel better soon. Sending hugs