Alone. I deal with people and their computer-related problems for eight hours. Just give me one hour where I can eat my food alone and listen to naught but audiobooks, podcasts, or music and I'll be a happy cowboy.
People always ask me where do I go during my lunch breaks, I just tell them that I go eat in my car, then they just look at me like if Im some sort of weirdo lol.
Also all of the co-worker gossip nonsense is probably the most annoying shit to listen to. Even if Im not part of the conversation and Im just across the room, I can still hear their dumb conversations and all of their monotonous topics.
I have 20 minutes to heat up and woof down a lunch. Sometimes I have photocopying/printing to do during that time as well. I eat alone because I absolutely don't have time to talk while eating.
As a kid back in the day in elementary/middle school it sucked eating alone, but now as an adult I just cant stand people when Im eating. Like stfu and let me eat asshole! lol