Maybe what you're addicted to (like me a little) is the actual buying of the light (and maybe a little initial playing with the light) more than the having of the light. I won't even mention the using of the light because at 100, you're way, way past that.
Seriously, I suggest a 4 step solution:
1) force yourself to have a playing schedule with the lights you own. You're going to toy with each one for say 10 minutes until you cycle through the whole set (excluding NIB ones for resale).
2) one's you don't appreciate playing with, put aside for sale.
3) sell them. This applies to the NIB for resale ones, too. There won't be a better time than now for almost all of them, given the advance of technology. There are very, very few real classics around that will appreciate with time - and if you have 100 of those, you deserve to be broke.
4) repeat until you enjoy - at least a little - the ones you're playing with.
I just went through selling a number of my lights and toys. Lost money on each one, but oddly enough, I'm happier now. Someone is enjoying my Blaster Jr, Infiniton, etc. and they're just not my concern any more. And now, maybe I can buy something again.
Remember - this is not a hobby to make money with (unlike guns in the old inflationary 70's, for those old enough to remember). It is a hobby to have fun with at reasonable cost.
Just do it....