It's better than a religion!

A Nation of Dim Bulbs: "The new bulbs are particularly vulnerable to extremes of temperature, for example; you won't want to use them in your garage in winter. CFLs are also 25 percent longer in size than the average incandescent. This makes them unsuitable for all kinds of lighting fixtures--particularly chandeliers and other ceiling lights--which will have to be either discarded or reconfigured, at considerable expense, after the Bush ban goes into effect. You can't use most CFLs with dimmer switches, either; ditto timers. Newer models that can be dimmed and are adaptable to timers will require you to buy new CFL-compatible dimmers and timers.
The quality of the light given off by CFLs is quite different from what we're used to from incandescents. The old bulb concentrates its light through a small surface area. CFLs don't shine in beams; they glow all the way around, diffusing their illumination. They're terrible reading lights."