Why is it that I don't get "hydration systems"? Didn't we used to call these "canteens"? I thought I was going high-tech when I went from Boy Scout aluminum to Nalgene.

When I want a drink, I pull my canteen off my belt and guzzle. Why have I never thought, "This is so much effort to bend my arm, I wish I had a plastic tube thingy to suckle water out of"?

What am I missing out on?

Dave