Perks? No! U.S. flyers prefer the cheap seats: Reuters/Ipsos poll

This surprised me.

I will take any seat available if the flight is under 90 minutes, but only if I have to. Otherwise, I will pay a little extra to avoid the middle seat. And, if it’s a very long flight, I will pay for Economy Plus to get a little more legroom, maybe an exit row seat, and AC power/USB chargers.

Read more here.