The metric system will never catch on in the US. It's been tried before. (and failed because it sucks).

The metric system is the best system to use in a lab setting. Science in every country uses metric measurements. But for day-to-day lives, people here like using the imperial system, including me. Fahrenheit, feet, and pounds, especially, would be hard to do away with. What do you have equivalent to a foot in metric? You jump from a tiny centimeter to a huge meter, whereas in imperial you have inches, feet, and then yards. Decimeter I guess would be a bit better, but does anyone use that?

Also, being divisible by 5 and 10 is nice, but being divisible by 3 and 4 is also really nice. There's a reason our time system is based on 60 minutes, 24 hours and everyone accepts it. Just like 12 inches in a foot, it's easily divisible by a bunch of common numbers (2, 3, 4, especially). Who needs to measure a tenth of a meter?