Macbook Air owners, protection?

[AncasterRFD]

I know us RFD'ers are probably a little more conscious about caring for our pricier products and resale.

I have a 11" since it came out. I bought a Speck Satin, almost ?2y old, and it never chipped until my MBA slid off the bed once (recently). The Speck still stays on.
It was cool looking, see thru, so when the MBA was turned on, it looked like a black MBA.
I'm not sure where those complaints come from on Amazon when they say the plastic ends break/chip off within months of ownership and the covers don't stay on anymore, some of them say they never dropped it and were really careful.
Maybe it's because when in outside transport, I also put mine in one of those memory foam sleeves.

Now that I have a new 13", part of me thinks why cover it up and add weight to it (the 11" was so light, the Speck was negligible).
The other part of me thinks one accident like I had and the unit could have been damaged, even if only cosmetic, not good for resale. Also when I had the Speck on the 11", I really didn't care where I put it down knowing nothing would scratch it. A sleeve on it's own wouldn't eliminate that concern.
The reviews make me wonder, did I just happen to get a good Speck?

Do you protect your MBA and what do you use?

(It's funny almost every Mac thread here turns into a pssing match against PCs, lol. BTW, my main at home is PC I built, I have a Revo in my kitchen, my kid uses an iMac, I (had) a 17" MBP that I modified, and I have a company issued Lenovo lap I don't take home).

Edit: Sounds like a lot of computers. Only the Lenovo and MBA are used by me exclusively. The whole family uses the rest.

[Mulder and Scully]

I don't use any covers for my MacBook Air 13. I considered a cover for a while but decided against it. I don't even use a sleeve and my Air just sits in my backpack. I reasoned that having a cover adds to the weight which I don't like because I carry my Air every day and want it as light as possible. I also find that a cover isn't too aesthetically pleasing. I don't drop my Air (or ever) so I don't believe that I need that insurance policy.

My Air, being in my backpack and just using it on a daily basis, does have a number of small scratches on it even after just a month. It used to bother me but that quickly went away. I'm not going to resell this laptop and I plan on using it for 2-3 years.

[nasa25]

My wife just uses a padded sleeve on her late 2010 11 inch.

It has a couple of scratches from when she dropped it behind the couch, but that's it. Actually, I almost lost my mind when she dropped it literally a few days after I bought it for her.