Platforms also go in and out of trend, but geez 5" is high. Anyways if you really like a pair I say get it and just hold on to them for the next round.
5" is really high...i didn't even know platforms that tall were a "trend"...personally i think people would look at them just because they're so freakishly tall! small platforms probably won't go out soon though...they give such a good, comfortable lift