One issue with compact fluorescents, and probably LEDs of the future,
is that they can't be dimmed in the conventional manner, at least
not run-of-the-mill ones, with the inexpensive dimmers that
mount in the walls.

There do exist dim-able CFs, but they are many times more expensive
than standard ones, and not readily available in shops.

If you dim a bulb down to about half its usual brightness you
end up using less than half the power and also extend the life
of the bulb greatly.

So while energy-saving bulbs are great in many applications, it
is short-sighted to forcibly 'ban' incandescents. They have their
uses.