So, I've heard a lot about lowering bikes for shorter people, and I know that it changes how the bike handles (and that ideally you wouldn't do it -- or at least that's what I've heard).
But, what exactly is changed when you lower the bike, and how does it affect the bike's handling? (i.e. why wouldn't you want to lower the bike / minimize the amount it's lowered, apart from the obvious issue of hitting things with your oil pan.)
(I know this isn't exactly on topic, but I think it has a place here.)