Sorry, I refuse to use poison in my home. A LITTLE Mercury is more than the amount that should be, which is NONE.
Do you have any idea how unrealistic that sounds? Light bulbs will break, you can try to avoid it, but it will happen at some point or another, and as stated, even a little mercury is hazardous, especially to humans and animals. And, whether you put it in a bag or not, it's still equally bad for the environment. You're contaminating landfills, which in turn, can contaminate ground water. On a large scale, that's poisoning half the population.
As for #3,
-They give horrible light
-They take long to reach maximum output.
I can go on for hours, but that would be boring.