I agree. Stamps were designed for a purpose -- to convey a communication from one point to another point for a fee -- the fee in the form (modern) of a "cute design" on a piece of paper. Shoeboxes. Boxes. Shopping Bags. Plastic grocery store bags. I've seen them stored in almost every container you can image. Sloth is the only problem about covers. I make my own pages to hold standard and oversize covers.. its fun.
For the sensory stretched Simpson-Gen, those tongue-challenged and need pressure-sensitive lick & sticks to understand the value of a cover, burn a few brain cells and think 30-40-50 years ahead. Todays USPS, and other issuing postal agencies, are generating tons of "stamps" that will never see postal use. However, those same commemorative stamps, if used on cover during their valid rate period, will be extremely rare and hard to find items in years to come.
Put another way, the advent of e-mail and Internet has meant the demise of the use of the mail systems to convey communications. I'm not discussing the use of stamps on mail by direct mail marketers and fundraisers. Today, we rather Blog, e-mail or be a Twit rather than write a letter to a friend.
Today we want immediate -- demand immediate response and gratification. Today, we'd rather play Halo and Call of Duty (I log-on at 9PM)

rather then a send letter. I'm talking about business and individuals sending mail: business-to-business, business-to consumer-to-business, individual-to-individual; using stamps and the first class mail.
Look at your own mail. How many new issue commemorative (solo-use) mailings do to you receive a week-month-quarter. Look at based on New Issues being released. Face it. Stamps are rarely being used.

The mail is Bulk Indicia, Meter or the stamps of Bulk Pre-Sort.
In 20-30-40-50 years todays first class New Issues, used correctly ---not philatelically or FDC -- is going to be the postal history of the future. And as for some modern Postal Stationary issues, just look at some of the prices shown in Scott's. If that doesn't convince you to store covers in a shoebox in the back of a closet, well, the Simpsons start at 6PM -- I'll be on-line at 9PM. (and it took me 2 minutes to put away my covers.) :)