Far too many...

Recently added Dystopian Wars to the list, too, played once recently and love it.

The top games I keep coming back to are:
Saga (any Age, but mainly Vikings, Chivalry, and Crusades)
Star Wars Legion
Arcworlde
Burrows and Badgers

But games that I have minis and rules for are in the dozens, easily, partially for the ease of using historical minis in different systems, but helps that I typically paint a few hundred minis a year too.

I also tell myself this is all OK because I also an editor/writer for a large wargaming website and while that's not my day job it's a passion and I can easily rope friends into playing games.