I like LEDs too. They are fantastic in flashlights. However, they are not good for all applications. I recall reading this past winter about some morons who decided it would be a good idea to use them in stoplights in places up north. Apparently, in winter conditions the things would freeze over making them essentially not funcion because they couldn't be seen. You see, LEDs are so efficient, they give off very little heat. Simple, old-fashioned light bulbs provided their own built-in heating source to keep them from freezing over. They ended up having to add small heaters to the stoplights to keep them working in snow. Not only was that stupidly expensive, it completely nullified the "energy savings" they'd been hoping to get by going with LEDs. Not only that, now the entire system is more complex because it needs a separate heating element, thus making it ultimately less dependable and prone to failure.
Yet another unintended consequence of the eco-nazis.
Good point: living in the SE United States its easy to forget the cold part of LEDs. It usually doesn’t get close to as cold as you are talking there.