We have them (family of 5) and have never once been hit in the shins. You have to back away to open the door anyhow, so I dont understand how you could get hit by them. My 3 year old son who seems to get hurt every fifteen minutes has avoided them. I agree that I (6'1") dont need them, but they are a neccessity for my young kids and short wife. Nothing looks as good at the power retractalbe boards, as well it has that cool factor too. And as far as the maintenace costs goes, the entire assembly is expensive to buy, but a single part that breaks or wears isn't much to replace. Having said that tho, it was the one option that I could have skipped but it came pacakaged with the adaptive cruise control, which I couldn't skip!!
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