It's more common sense than "addiction." Although I know you probably are not really talking about an addiction. Maybe some of these guys really ARE addicted to them, I don't know. Might be crack in the micarta.
I started out with an Ontario RAT-3 and, as usual for me, sitting around a campfire and cutting an F-STICK for the fire...I started whittling on another one just for fun. Then I started shaving it down with the edge 90 degrees to the stick. After about an hour, I had no hot spot on my hand and the knife was still really sharp. I eventually dulled it enough to need touched up and that was pretty easy too. Man, that's three for three right there. Grip was secure and didn't blister anything, held an edge well and was pretty easy to resharpen. Most knife companies fumble and drop the ball before we get through with these three attributes.
Then I saw the very early picture that Jeff put up of the Izula prototype being batoned through a cherry limb, if I remember correctly. Did some reading about the newer knives that were not Ontario offerings and read where some guys said the newer knives were even better. Waited around for months for that Izula...as everyone else did.
So, the Wifey and I both have an RC-3 and we both have an Izula and I have a H.E.S.T. We both have the Advanced Survival Kits in the nice, little green pouches.
The newer RC knives hold an edge a little bit longer and are about as easy to resharpen. The grip seems to be a bit more refined than the older ones. So...
Oh, one of the things that changed dramatically between the Ontario RATs and the RCs was the coating. The RC's coating is simply off the scale...it is easily twenty times the coating of the Ontarios.
I traded off an Ontario RAT-7 before I ever got a chance to go down and hack down a hectacre with it. So, in the future, I believe a Junglas will be in order as I need a chopper and I really don't see any need to give another company my money for Outdoors/Survival based knives when these work so good.
I know there are a lot of jokes about "addictions" and "cults" when it comes to knives but I am really not into that sort of thing, besides just being a part of a community of like-minded people.
Overall, I admire ESEE Cutlery because they make good products and stand behind them and the place is run by two guys who are basically into just that. They are also not resting on their laurels and instead they are branching out into other survival gear - big plus for me!