I prefer to think of it as a mating ritual between suitor and bride. That said, no one put a gun to my head and made me bid. I was happy for the opportunity
My comment was in no means a criticism of anyone's purchases. We buy what we love, and quite frankly, if and when it comes time to sell the number in the top left and the Promise Ped designation will carry much more weight than the actual book inside for most buyers.
We all own over and undergraded books and I've never looked at my own personal books with an eye towards how well it was graded as I only bought what i was happy to own....and many books I was glad to own because I'd have a tough time owning another copy.
Speaking as a dealer now, who submits 1000's of books every year and I see 10,000's of books every year and whenever I see books in holder I can't help but compare them to my own submissions.