While stringing up Christmas lights, I had a brief conversation with my neighbor. She explained to me that they weren't going to use LED lights for the same reason they don't use CFLs in their house: they don't want the government telling them what kind of lightbulbs to use.
I saved my breath at the time, but I can only shake my head. What's the operative theory at work here? It feels like a vague sense of conspiracy, without an actual theory behind it. I.e., the government must have some sinister reason for advocating energy-efficient CFLs, so even if neighbor can't get as far as formulating an actual theory of why that is, they will, on first principles, resist.
It's crazy, people. Get educated, get facts, use your brain. CFLs use 75% less energy. They replace wildly inefficient incandescents, which are a 100-year-old technology. That is one heck of a savings. I first heard of CFLs 23 years ago, back when they cost $15 per, and utilities were pushing them with rebates. I have been using them, in increasing quantities, ever since.
(P.S. I know some people don't like the color cast of CFLs. That is a completely different argument. Maybe not such a compelling one--given the huge savings, and have you tried high-quality CFLs lately?--but a very different and at least legitimate one.)