It just isn't capable of my brain to imagine. Maybe if they've been attacked or bitten I might understand (even though I've been bitten plenty it hasn't stopped me)
I can fully understand hating irresponsible owners. Those are def annoying because they give responsible ones with well behaved dogs a bad name. They even give dogs themselves a bad name-bad owners equal bad, misbehaving dogs.
If everyone had a perfectly well behaved dog that was good with people and other animals I wouldn't actually mind people bringing dogs everywhere-but many dogs just are not.