Yep. We sure are. I myself haven't been ageing beers very long (1 year on last year's Bigfoot is the longest so far), but I've had the privilege of trying some old beers next to a current batch. It can sure make a difference.
But keep in mind, if you haven't tried the beer, how will you know if it gets better with age?
So drink up a few of the Bigfoots (they are incredibly delicious right now!) and put a few of them back. Then you can pull one out every year or so, and see what you think!
Edit: Also, I've done a year or so on several homebrews, and now make it a practice every batch to put a couple back for at least a year just to see how it shakes out. Normally, pretty darn well...