People who moan about the BMI scale make me laugh, since they always mention the people with lots of muscle line. Which in itself is true, but anyone with enough muscle to scew the results, is defintely not going to be worrying about being fat anyway, so they can just assume they are healthy.
I just sit there imagining some fat bugger that thinks he somehow underneath his huge beer belly he's actually Arnold Swartzenegger. Lol.
Bmi works fine, cause if your fat you know it isn't muscle, I use myself as an example, BMI of 24.9, low BF and gym a lot. I'm not suddenly going to panic and stop going and lose weight. However if i was at home all day eating donuts with a bmi of 25+, I would.