I also kind of think of it this way, where it's a little different than the gas situation. With being able to charge overnight at home, I can't use up 200 miles in a day driving around town. So it's fine, and I never have to think about it in all of my daily use.
The only time it's even a consideration is when I am doing a trip. And when you're on a trip, you don't just "find yourself" somewhere. You drive for an hour or two at a time to get somewhere. You will have a destination set in navigation, and a display showing you as you drive how much remaining % of battery you will have left when you arrive. If you see that around 15-20%, you're doing fine. If it is dropping, and you see 13, 12, 11, ... you need to slow down some to lower that energy use from the wind resistance, and you'll give yourself more buffer. You have lots of time and lots of information to make these choices ahead of time so it doesn't become some sudden unexpected emergency. Really, it's amazing how much extra range you can get from slowing your speed.
Also, I'd rather take it a little easy during the early third or half of a trip to see how it's going. I can always speed up later if I have excess miles leftover and have a lot of margin, rather than speeding a lot early on and then realizing you have a problem and trying to claw back miles out of nothing when you've already "spent" them.