It's all fun and games until you try to copy the "66 and 99"-style quotes from one place to another, or your ”helpful“ text editor automagically makes a mess of them. It's a pity no good ``asymmetric'' style ever really took off in English. I'm particularly fond of the French «chevrons», and relatedly, ¡Spanish exclamations!
⸘Why has not yet the opening interrobang received similarly wide adoption‽