I noticed a thread on InTatters in regard to shuttles. Some people have a lot of them. Some people start out with a couple and then they seem to multiply like rabbits. Some people have hundreds of shuttles. There are times when you are making a project that you need pairs of shuttles for working different parts of a design so it's not that difficult for a serious tatter to require 6 or 8 shuttles.
I can see, when you are learning to tat that you need to try out different types of shuttles. You might love large shuttles, or you might have small hands that need a smaller shuttle. You might try out a post shuttle without a hook and then find that working with an attached hook is easier. Or you might use a shuttle with a hook and find that it gets caught in every stitch. So you try out a few varieties to see what you like.
If you fall in love with post style shuttles you will inevitably acquire a few more since pairs of them will be attached to projects and half full shuttles will require emptying. Bobbin style shuttle are emptied by popping them out and letting the thread unwind so fewer shuttles are required.
Some connoisseurs will want to have one of every kind, just because they are collectors. They will haunt antique stores and flea markets looking for that unique shuttle to round out their display.
Then there are the hoarders. They can't pass a rack of shuttles without buying one. Or 10. If there are shuttles available online, they need one in every colour. Decorated shuttles are bought for every occasion, in fact occasions are invented for excuses to buy more. There are shuttles all over the house. There are some by the comfy tatting chair and a few on the computer desk. Every craft bag a purse has some stuffed in it. There are some stuffed down behind the cushions and peeking out under pillows. There are boxes stuffed in cupboards full of them. Some are hiding out in drawers, some dangle by a thread from pockets. The cat chases others under the sofa, and the dog has left teeth marks in one or two. The hoarders never saw a shuttle they didn't like.
Better watch out, there might be a hoarder near you. Maybe it's time to go count your shuttles.