Honestly, i started using it because you guys told me to use it.Years ago, all there was,was Mono.
It does, however, give me a confidence while i am fishing. It allows me to use incredibly thin braid to catch incredibly toothy fish. This year, i have caught huge walleye, a couple of small muskie, and some nice Pike, on thread sized 10lb braid, with flouro leader. Maybe mono would have worked just as well, but i seem to remember losing alot of fish way back when,because the fish cut through the monofilament.
I will continue to use flouro because i believe it works, and that allows me to catch more fish.