My father worked for an airline for more than 30 years. When traveling with my parents, I was up in First but when alone, I was always in Economy and my favorite seat was always, last row window seat at Left. Even though people would queue up to use the washroom, the rest of the time, it was the quietest, most private area and on a number of carriers you would get your meal served first instead of watching the trollies starting at the front. A lot of times, you could stretch out on all three seats because this was not a popular row and the crew would often stop and chat and offer extra snacks and drinks. I don't travel anymore because I hate the crowds but aside from safety issues, the last row was great!