Here are my thoughts on it.
When someone bitches about consumables take a look at their sig, 99% of the QQers main a druid or a bowel movement monk, and bitch incessantly about people playing warlocks and warriors popping speed pots.
I am to lazy to gear up my druid. I make up for it by stocking massive piles of consumables.
I have to agree with Franchi on this. Some classes are legitimately in need of a bit of extra help which often can come from the use of consumables. I support players that play more that just FOTM classes, and if a mage has to speed pot in an attempt to catch the EFC in mid then by all means I say do it. On top of that, because classes like druids have been adored by Blizzard in WoD (Side-note; Some of us actually mained druids PRE WoD, and shouldn't really be scrutinized for playing a character that has had lots of time/effort gone into it), other classes need an upper hand. It's retarded that a feral druid can kill even the most skilled of players before they've even gotten a cast off. As a result, i'd support the use of free-actions, flash bombs, speed-pots, everything. Hell, if i'm on my druid (I am yet to queue as feral in WoD), and I get flash bombed, that's fine. I accept that. As should everyone else. As for the OP and Vets use of consumables to make-up for what your class SHOULD have at 29, I firstly have to say to anyone who says "Oh just play 29 then" to politely GTFO. You disadvantage yourselves in one way (gear/abilities/glyph) to take advantage of something else (free play). Fair trade, and that's your right to do so.
The FOTM classes that complain are likely uneducated on the availability of consumables, or can't fund them. Therefor when their God-Mode life-span comes to an end at the hands of a destro lock they cry about "unfair advantages" because they don't believe they should be killed.
Consumables are there to be, well... consumed. We twink, we aim to make the best of what we have available. Perhaps in premades & competitive matches, they don't have a place, but otherwise, go nuts.