You will either:

a) give your opponent(s) a chance to check behind when you have the best hand
b) convince your opponent to fold a much worse hand (KK etc)
c) get eyeball raped by a much better hand
d) get 1 or 2 more BB out of hands that range from nearly dead to quite live

You have to remember that you shouldn't just trying to get as much action as possible into the pot when you think you have the best hand. There's a fine line. There's only so much action your opponent's hand can sustain before he knows he's too much of a dog to continue (he already knows he's a dog, but a small one), and there's only so much action your hand can sustain before you must be a huge dog. You want to walk a tightrope where you make his hand range pay as much as possible without crossing that red line where you're putting in too much money yourself. These ideas combined with the risk of your opponents checking behind make this a really poor play in almost every possible perspective.