what's wierd is a lot od sex toys (dildos/vibrators) are really thin like the thickness of one finger, perhaps women would prefer it if a mans weiner could vibrate at 1000rpm lol
Personally I don't like anything very long (6"-7" is perfect for me) and too thick would hurt and is too difficult to give good head to. I love a nice defined mushroom head though...that feels great when it hits the g-spot!