Ergonomic Boom

I'm not really in to fashion; however, I would say that I'm in to trends. What's fashionable at any given moment seems to based around what a select few consider it to be. Trends, on the other hand, are typically trackable or predictable, a more of a cause/effect relationship from which one can learn.

Recently, I've noticed a "second coming," if you will, of bendy straws. Everywhere I go, they appear more and more frequently - restaurants, grocery stores, etc. I've been trying to identify why there has been a resurgence. I have 3 theories:

1. Cyclical - like that of tight jeans, then baggy jeans, then tight again, it's a simple and healthy change for the sake of change.
2. Economic - stockpiled during the 80s, this unused inventory has been brought back out of hiding to save on expenses.
3. Ergonomic - riding the wave of the ergonomics crazy, flexible straws are simply trying to "get them some of the profits."