KVD uses it on almost everything, I use it on baits I am counting on feeling "ticks" "taps" slightest bites. Flurocarbon has high tensil strength and for the most part abrasion resistance, with a good fluro you can feel a bite at the offset of the cast instead of halfway back on a long cast, thus better hooksets on longcasts. it is a sinking line so it doesn't work well at all on topwater baits that is where mono or copolymer excels. I like mono on crankbaits because I use stiffer rods and the stretch help where the rod is lacking as where others use glass rods. It is all about sensitivity.

I can hand you 2 identical rods fishing a worm rig 1 with mono and 1 with fluro and tell you to drag the exact same location and you will give me 2 different answers to what you feel. On mono you'll think you were dragging through moss and with fluro you feel were dragging up a rock or over a tree. Compare this reach out your finger and touch something then pick up a 3ft twig and drag over the same thing, you'll have more sensitivity with your finger because you feel it directly (no stretch ) That is the best way I can describe it, but if your fun fishing .....who cares - mono has worked for years, but if you are seriously looking to capitalize on bites then it matters