Sharing food is stressful. Before the food arrives there's an obligation to make a mutual decision on what to order. I like to avoid this and get my own thing. But with small plates, that's conspicuously anti-social. So I'm forced to engage in the "what do you want to share" conversation. Invariably, whenever this takes place, I find myself repeating: "I can't eat that."
Now we're faced with two choices. Order twice as many dishes and go into debt or choose the food I can eat which naturally tilts the order in my favour and establishes a hostile tone for the dinner. And how do you possibly know if you've "ordered enough". As soon as the waiter or waitress asks this I become anxious. What will be enough? And leaving the menu behind "just in case" doesn't help. By the time we know it's not enough, it's too late.
Once the anxiety and hostility sets in, the order arrives. I'm forced to eat at an accelerated pace just to get a bite in. Suddenly, what was once a leisurely meal turns into an aggressive eating competition. You have to race through your meal or you'll go home hungry.
There's no way to have a meaningful conversation either because if you're the one talking you lose out. Here's an excerpt from the dialogue between two people sharing small plates:
Do not share dishes, it does not work!