I agree with you but LED's do have there pluses here:
# The pattern of light from LEDs is more directional and permits the light to be concentrated where desired with less stray light.
# They never need replacement.
# You can match the orange color of the interior lighting perfectly
And there are 2 volt LEDs!
And here is a good website for calculating what is needed:
http://www.7volts.com/led_resistor.htm