'Is buying fishing kit addictive ?'
Yes it is, that's my excuse from now on and I sticking to it. I didn't buy it, it's not my fault I have an addiction.
Seriously though I am about there as far as major kit items go for my needs. Yes I could look at upgrading my Korum Barbel rods, but as they work just fine for me, then there is no real urge to update them. The only possible exception being a shorter float riod, although as I haven't come across a situation where I need one it's not something on my mind. Other than that I can only see some camping kit; stove, cookware etc being bought.
As for minor kit ah well that's a whole different addiction.