The McRib is a perfect example of good marketing and driving demand by artificial scarcity.
But yeah, the hype is kinda fun and every once in a while I like having one.
I feel the same way, when KFC has their chicken littles. . rarely do i do ff, other than chik-fil-a. But if they're offering them, chicken littles, oh yeah. Of course it's usually when i'm close to home, very close.