It's not really an addiction, for me.
It's a quest for perfection.

My quest started with me trying to find/buy a set of perfect keyboards; one for work, the other for home.
I made good progress, but ultimately realized I was never going to achieve the level of perfection I was looking for, that way.

That quest evolved into my current quest, which is to design/build my own perfect set of keyboards.
I've finally gotten a fully custom board built for work, designed from scratch...by me, for me.
I'm working on the sister board to that one, for home use.

After that, I don't see where I will really have anywhere productive to go, until my next big idea pops up.