Isn't that cotton fabric? I know Walmart sells them pretty cheap. It's what 5 - 6 yards on each side depending on what size you get?
The poly batting can be used to make body pillows or regular pillows, pet bed stuffing, toys etc.
I have two that I really like the colors of the fabric, don't use them much and would love to take them apart and resew into things like mug rugs, table runners for spring etc.

Go for it. There are no rules. If you will get more use out of the comforter by making mug rugs, have fun with it. What good is a comforter that you don't use?

I agree, they just sit taking up closet space that could be used for other things.
I was also thinking, with the price of cotton going up up and away, this may be a cheaper way of getting fabric for backings, etc.

I think that's a good idea.

Great idea. I have old comforters that i was just going to use as batting. never thought of taking them apart.

thanks for sharing this great idea! pab

I personally would not spend much time on this because it will depend on the ware it has had. Fabric has a life time limited to its use .I sure would limit my time to something quick.I had a bad experience with this and even though the fabric looked good it after 2 washings fell apart and my work was for nothing.

also.....holes left from the machine quilting.