In the USA, some people might use mass, grams, or some other things involving the metric system during their daily life. But, some people MAKE things using the Metric System.
Christopher W. Spencer, the vise president of engineering at E-Z-Go, builds his cars using the metric system. He does this with pressure gauges, nuts and bolts that are measured with the metric system, and many more things metric-related.
In Washington DC, there is a teacher that surprised her students one day with a small cube, barely smaller than her thumb nail. And her students couldn't figure out that it was a gram. Later on, she brought more things that her students had never learned or heard about and taught them all about it.
Some people ask, "why should we use the metric system, because it's superior, less consulted?" Someone one else said, "Everything is ordered in units of tens, while the chaotic arrangement of the imperial system slows things down for us-not only in terms of education, but also business, science, foreign relations, and daily life."