A lot? Like, OVER 9000 (couldn't resist :P)
But what's definitely worse is the W key. That button is so messed up it literally gets out of its socket every 20 clicks, extremely annoying, especially while playing:
"-Guys go go switch rogue!
-FAK, W key ruined, SEC have to fix"
This happens every game, and I must put back the button in its place every time while playing. Must change keyboard.
PS: The W key went out 11 times while writing this. Stupid W!
I've never used the 1 key as much as the other keys. I've always used 2 for my primary button mash with 1 being either a slow, or 1 an ability which I don't have to use as often.
Nowadays though I've completely changed my keybinds. My button mash ability is on W, while my PvP trinket is 1.
Probably over 100 million times. On all of my characters, 1 is usually the key that i hit the most (jab on monk, crusader strike on paladin etc). + all the times i've hit it to change weapons in fps games.