The fact that some people don't care about efficiency doesn't mean we shouldn't measure it. For example, a lot of people buy cars that are fuel-inefficient. Does that mean we should stop measuring car efficiency? No, that's a ridiculous argument. If you don't care about efficiency because you care more about other stuff, at least you should be aware of the trade-offs, and also have the intellectual honesty to admit that you don't care about efficiency, instead of pretending that efficiency is not important.