Defending Against The Trompowski Attack

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Highimsam

This was my first time seeing or defending against the Trompowski Attack. Went back to analyze my defense to see if I was opening myself for any tricks or traps since I feel like I'll probably see this opening again. Computer thought my defense was okay, but it really didn't like my 11th move, and I don't understand why. Here's the game.

 

 
As you can see, in the game I played 11... Bxd5, but the computer hates it. The computer recommends pushing 11... f5 and a short continuation from there is included. It's a move I saw but didn't really consider. I get the principle of the move. The pawn on f5 obviously attacks e4 and white can't play exf5 because he'll lose his knight. It also opens up my dark squared bishop, giving the bishop a really strong diagonal, and also attacking the undefended pawn on d4. Positionally, I get it. It's a strong, aggressive move, and now white has to be very cautious or black can start swiping pieces off the board. But the same is still true for black. Black is up a pawn and has a lot of defenders, but it's a complicated position that can swing in either direction.
 
I know this maybe isn't a "good" reason to play a weaker move, but since I've never seen the attack, I figured playing 11... Bxd5 stops any chance of myself losing to a tactic I didn't see coming. It completely neutralizes white's attack and eliminates any chance white has to win the game. I figured, best case scenario for white after Bxd5 is a draw. After exd5 and Qxd5 I was hoping white would trade queens and we'd immediately go into the end game, but I'd have much better development, my king is already castled while white's king is still in the center. Just seems tremendously easier?
 
White decided not to trade queens with me and ultimately lost anyway, but what's your guys' advice on move 11? Even if the computer deems it a mistake, is the move really that bad? Or is it one of those moves that the computer only thinks is bad because it can calculate perfectly and doesn't have to worry about human error? I'm curious what everyone else thinks or what they would have played.
 
Cheers!
corum

I don't think that 11. ... Bxd5 is a bad move at all. It opens up the centre quite quickly which is quite a good thing to do given that white's king is stuck in the middle. And look how it turned out? Great!