Let's take a step back and look at it from the mechanical point of view.
There's no -heat- ..
It isn't exposed to large impact forces ..
It is well regarded in terms of quality-craftsmanship ..
Now, correlate that to the OTHER products you've purchased in your life.. How many of those have just suddenly broken..
Ontop of that, since you are a gamer, the HHKB is not going to be your primary anyway.. which means it won't even meet usage conditions under which it's been through MTBF validation.
-Further, if you're on geekhack, you're probably gonna play with it for all of a month, put it on the shelf and buy another keyboard..