Same here. I like to go for a walk during my lunch break, not be trapped indoors eating crappy food with coworkers. I just say no thanks and don't participate 90% of the time. The current office I work from is the first place I've seen where there are just as many (or more?) non-participants as participants.

I don't mind about the people setting up the events - it's a bright spot in the day for them in an otherwise tedious job. I would feel differently if I had to do their work while they did that, though!