We use a tap filter at home, and the only time we buy bottled for home use is when we get the gallon+ jugs for hurricane prep.
But when I’m out and about, it’s nice to be able to pull into a gas station pretty much anywhere and grab a well-chilled bottle of water instead of a soda. Yeah, I know I could have a reusable water bottle in my car or something like that, but I dislike drinking lukewarm water unless there is no other option.