If it isn't a rant, why are you declaring your rationality above everyone else? if it's not a rant, then you are just being a self important fool.
You are trying to make yourself seem above everyone who wants to buy one of these cards and stating they are buying to "make themselves feel better or because of martetking", ever think that people who are interested in things just like to be "up to date" with new hardware?
If it's irrational to have a hobby you like to keep up with then every person on the planet is irrational. Do you wait 2 months after a game is released to wait for the price to go down? do you wait for an album to be in the bargain bin? no? this is the same thing, yes it may be on a greater scale, but you are by no means some perfectly "rassional" person because you dissagree with other people, if you have no interest in these cards, stop slating everyone who does.