Most cups and glasses (at least of the non-mug variety) are wider at the top than down low. You can take a big first gulp, and when you look down, it still feels like you’ve got plenty left. It might feel practically bottomless.
Then, when you’re not quite ready or prepared for it, there’s a figurative tipping point. The relative slimness of the cup becomes problematic. Not only do you have less left to drink, but each sip lowers down the level of what you have at an accelerated pace. The less you have left, the faster it seems to go.
So many of us forget to savor, or maybe we don’t know how. That’s why cups should be wider at the bottom. And if cups aren’t, then at the very least, life should be.