Yes, I understand that cotters have frustrated you in the past, and you're certainly entitled you own opinion. But that's a far cry from a general indictment of a system that has worked well for almost a century.

On the flip side, how many posts do we see about crank removal threads being stripped, or the spindle interface getting loose. The reality is that cotterless cranks are actually more finicky than cottered. Also imagine the frustration that someone well skilled with cotters would have when faced with a cotterless system for which he didn't have an extractor. At least hammers are generally available anywhere in the world.

Note I'm not saying cotters are better, just that they get a bad rap because the knowledge about servicing them has been lost. Some time soon, I wouldn't be surprised to read that Quill stems suck, for the same reason.