How convenient then that you can use the 1/3 measuring cup included in your set, instead of spooning out 5 tablespoons and 1 teaspoon, which would be tiresome and ridiculous.
Honestly, my point was that there was some logic to the system, not that it's perfect. I think it is quirky that the system uses a multiple of 3 to go from tsp to tablespoon, when almost everything else is based on multiples of 4. But I never found it that hard on a mathematical basis to work with the 3 tsp/TB ratio. For one thing, I don't convert little units like teaspoons into big units like cups. If I were multiplying a recipe that originally called for 2 tsp of salt, it would have to be one hell of big dinner party before I was expressing the salt in cups. And even if I were making an 8 x recipe, it wouldn't be the end of the world to convert 2 tsp x 8 = 16 tsp = 1/3 cup. (If I'm throwing a dinner party for 32 people, then spending 3 minutes to enlarge the recipe is the least of my worries.)
With regular use I find the imperial system to be no more difficult than the U.S. currency, like when you're due $0.83 in change and it takes you no time at all to think, well that's three quarters, a nickel, and three pennies. You don't fret about the fact that a quarter is 1/4 of a dollar but 2.5 times a dime. You already know the coins as familiar objects so there's no stress. It's the same way for me with imperial system in the kitchen. YMMV.