A foot above the rest: Standard system measures up to scrutiny

I have had many different math and science teachers throughout the years, but nearly all of them have made the same claim: the standard system is ridiculous and America should switch to the metric system. The standard system is the units of measurement such as inches and Fahrenheit that are used in the United States, and the metric system uses measurements like centimeters and Celsius and is used in the rest of the world. Every time I hear this claim, I flinch internally. What did all these people have against the standard system? Why would we use it so much if it was completely impractical? Perhaps I was a bit over-attached to the standard system since I grew up with it, and the metric system really was easier to make calculations with…did I have an unreasonable loyalty? Though I had my doubts, as I have grown up and progressed through school, I have discovered many merits of the standard system over the metric.