I was heartbroken when my original Leatherman tool finally broke after about twenty years of daily carry. Replaced it with a Leatherman Fuse and it gets the job done. If I am wearing trousers then I am wearing my Leatherman. I probably use it more than any other tool I own.
It's not that it's better than any other tool, it is after all a multi-tool, so purpose built tools usually are better. What it is though is always on me whereas purpose built tools I would have to go get out of the tool box or drawer. Always on me when I suddenly need a screwdriver, pair of pliers, whatever.
Another tool always on me is a Leatherman Micra - pretty much simply because of the folding scissors. Those things are just handy. Add in a Spyderco Endura, MiniMag flashlight, and a small Swiss Army knife and that's my every day carry.