Building the mouse Logitech won't make

I still haven't figured out why they no longer make wired trackballs. The thing never moves, why do I need it to be wireless?

When you say "they", do you mean Logitech or Big Mouse in general?

Because I have wired trackballs from both Logitech and Kensington, and have for many years. You can pry my Kensington Orbit from my cold, dead hand.