JFK > ZRH - is my experience normal?

Coach: no per-seat in-flight entertainment, bland, tasteless food, and old ratty seats.

On top of that: 1 checked bag per person, 5 dollar beers, rancid air the entire flight, and 80-dollar upgrades to reserved emergency exit seats

Aside from that, their customer service was fantastic before boarding and the attendants were humane for the most part. I'm just wondering if this experience is typical of Delta, or if I got a bad flight?

I've flown several airlines to Europe with layovers, and I've never seen such a low quality flight. I felt sorry for my other passengers that they would pay top-dollar here.

My experiences with Air Canada, Swiss Air, and British Airways were like first-class seats compared to Delta, blowing it out of the water in every way. However, I liked their prices and was reading about features like in-seat and USB power, no layovers, and I got an American Express in preparation for flying with them frequently.

Should I cut it in half, or will they be upgrading their fleet in the next weeks?