I have two, a Micra that I keep in a pocket and a Free P2 that I keep in an EDC kit. The Free P2 was a bit heavy for my pocket and the Micra provides what I need 99% of the time. Still, the Free P2 or similar has some tools where when you need it, you need it.
Oh, at my last job I used my Leatherman a ton. Wire cutters, screw driver, pliers, etc. I used the blade for opening boxes and stuff too. I don't know that I'd say everyone needs one, but they are pretty handy. I don't usually carry it anymore at my new job since it's pretty different, but I still occasionally find myself reaching for it.
To the OP question, I would say everyone should have a "go bag" with essential stuff you need in an emergency that's already packed and ready to go. A multitool is a great addition to a Go Bag since it can take the place of a lot of tools in a compact way.
I would have a knife in my house for a box and screwdriver in car. But fair enough. I just never saw a use for it. Good that you use it regularly enough to have one