At Diamond 3 and have faced nothing but aggro decks of various types for an hour.
This. Fu(&ING. SUCKS.
Aggro focused meta? Lol… the new set is full of anti-aggro cards.. what are you playing? 
I mean you can’t blame the Paladin Player above me … he bases his game knowledge on a Net Deck he props played since four expansions, because Hsreplay said so.
And now to answer your question and cure your tilt: At an expansion-release many players decide to play aggro for two reasons:
- They don’t know which new decks are viable yet and therefore won’t waste dust until some Streamer tells them: “***THIS DECK IS SO OP, CRAFT NOW***“
- Aggro is a free win against unoptimized decks.
It feels so frustrating right now, because Blizzard tries to tone down the powerlevel. The cards tend to get worse now overall with the exception of a few outliers (cough Shaman fabled). The problem is: The expansions from last year until GDB continue to be absolute powerhouses and are just meant to win games against the newer cards. And that’s also the reason why we still see the whole Leech Package, Zarimi or the “bonk bonk part scrapper into Mech Combo”.
Blizzard should have rotated early or created a new mode for the new expansions only as a short term solution. So on one hand I totally understand the frustration and anger directed at Team 5, but on the other hand, I think they really try to bring bad “fun and diverse” Hearthstone.
I disagree with this statement as no matter how “optimized” your deck is if you do not draw your answers early to an aggro board you just die its as simple as that there is no strategy other than puking all your minions on the board and praying your opponent does not draw an answer a bit like when you praying for the Ace of Spaces for a royal flush in poker on the river.
I love when people try to make out like the draw in this game has no reflection on a game’s outcome, and then do not even mention Discover a card that manages to pull just the correct card from a possibility of 100+ cards of course a total strategy.
Ofc there is a small amount of strategy involved in HS but there is also a large helping of luck.
If there was 0 Discover cards and the draw mechanic was not there and you chose when to play whatever was in your deck instead of what you have available in your hand then Yes that’s a strategy as you are dictating when you play what and not some other factor.
I can imagine a game of snooker where it was random what balls were placed on the table and then they blindfolded both of the players and they just hit random balls and the only thing they had was someone positioned them to where the white ball was. “It was so much skill that he got the highest score and a good strategy” , No he just hit the ball and got lucky 
xD
I kinda understand your point, i should have made it clearer:
Unoptimized Decks lack the quality of identity. Most of the time people throw many new cards in their deck, just to try them out (that is ofc fun and understandable). They do not concentrate on a “deck type” and therefore consistency in board clears (for control) or tempo (for minion based answers). Meta Aggro-Decks are easy to build and very consitent bc almost all cards are in there for the purpose of going face, punishing anything that cannot find consistent answers on board or in hand (and every player can play this easy decktype optimally). On the other Hand: This is the reason why optimized Control Decks are so good against aggro, bc they outlast the consistent burn with consistent clears. This has nothing to do with RNG or “Discover”, bc optimized decks try to shut down the mechanic as much as they can to get a consistent win rate.
Aggro gives you a free win, bc it ends the game before turn 6… as opponent discovering an answer almost never works bc you always need to spend mana on it losing tempo to mitigate early game damage, keeping you away from lethal range in mid game to build up a Wincon in Late.
Think of it like a pokemon cycle (Water beats Fire, Fire beats Plant …). Aggro beats Combo, Combo beats Control, Control beats Aggro. If you don’t match the consistency of a good control deck, you will loose against Aggro everytime