Really late coming back to this, but yes, I own several sleeping bags with zippers, tents with zippers, backpacks, down coats, gadget and storage bags of various kinds, various other jackets, all kinds of stuff with zippers.

You say "[w]hen they're such a bane for others," but that's not my experience. Here in my seventh decade of life, I have never heard anyone but you complain so much about zippers.