Straddle Anywhere?

[tomdemaine]

So I sometime play in a pretty juicy live NL game at a casino near me. I just revently found out that you can put in a straddle from any position. Ie you double the blind bet and action starts to your left preflop regardless of where you are. This just seems crazy to me is there any reason why I shouldn't be straddling every time I'm on the button so I act last preflop as well as on every street. Does the blind bet negate the positional advantage? It's a 9 handed table FWIW.