Why you need a mouse with 19 buttons — and what you should use those buttons for

DO NOT USE THESE MICE!!!
No matter who tells you otherwise, this type of mouse is too heavy! Over time, the strain on your pinky from supporting the weight can cause serious tendon injury.

It happened to me. I couldn’t use a mouse with my dominant hand for over two years and had to switch to my left hand the entire time. Not worth it!
 
I'm sure it differs from person to person. I've been using mice like these since the first Razer Naga came out like 15 years ago, and have grown skilled at typing numbers in spreadsheets very quickly with my thumb if the keyboard isn't on my lap.

Probably comes down to how people use the mouse too. I use a palm grip and prefer the heaviest mice possible, and I've never had a problem. Though between typing, playing games, and 40 years of piano, I have pretty strong hands. My pinky isn't supporting any weight, either; it's usually just hanging out off to the side on the mousepad and going along for the ride.
 
(I refuse to acknowledge any company that has ever thought that only one mouse button was enough).

I recall an online forum once, around the turn of the century. One Apple fanboi says, "Name one thing you can do on a PC that I can't do on my Mac!"

The answer was immediate, "Right-click." 😛
 
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I have the Corsair Scimitar and before that the Razer with the 12 button pad, and I can say there's a lot of use in them outside games. The ability to scroll up and down with a mouse button, a middle mouse button on the thumbpad so you can easily middle click without accidently scrolling, assigning one to Win+Shift+S and other Windows combinations, among many others. Also if you have big hands like me you have something more substantial to grip, and more buttons means if one goes out you can move to another and increase longevity.
 
My Logitech mouse has 10 programmable buttons (including wheel up and down) and although it's awesome in games, I often have a hard time remembering which one does what. I can't imagine if I literally had a number pad on the side.
 
Want to have some real fun. I have a script (on Linux) that watches active application window and changes profiles for my corded Scimitar Pro. Practically unlimited capabilities!!
 
Want to have some real fun. I have a script (on Linux) that watches active application window and changes profiles for my corded Scimitar Pro. Practically unlimited capabilities!!

Same can be achieved through apps like REWASD on windows. Probably free ones out there too. Or grab the source code for the old REWASD that’s on GitHub. Per-application/game profiles. Tons of customization.

All of this amateur compared to what one guy told me. Apparently he used foot pedals for additional macro key layer functionality. lol. So like you have 5, shift + 5, ctrl + 5, and now also pedal + 5, pedal + shift + 5, etc etc. I’m glad I never got into that level of gaming.