Well I'm glad you have your popcorn ready,

!!
Well to answer the question of the thread, I have 14 brushes........ Don't know why,

!!
2 dagr's (which I'm about to put up for sale, just never use them)
3 IWATA's
3 Sata's
5 badgers
1 infinity 2in1..... And a partridge in a pear tree.
My thinking was the same as yours at first that I could have every color waiting to be used!! But I'm not a T-shirt artist and I'm slow. I usually have 2 ready to go but that's about it. I will be cleaning house real soon for 2 reasons...
#1 because I don't need all of them an someone else could use them instead of sitting in their box,
and reason number #2 reason is.......
I have my eye on another brush, lmao!!!