I don't think that most who use  the glass-like reflective floor are going for realism. I think it's just something that looks cool an at one time different, but now everyone and their mother are doing it. Heck, I even gave it a try,  LOL

Bagginsbill has a great thread at RDNA about getting realistic floor reflections.

http://www.runtimedna.com/mod/forum/messages.php?ShowMessage=266073

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi