Yes, I would be into watching people fuck. Especially if they are not boring and vanilla.
Adding the "Diddy" thing makes me not wanna go "yeah! just like him!"
Don't know a bout a dark corner or Diddy but yes have in the past walked into a couple fucking and just took a seat and watched people fuck... its what swinger clubs and house parties are about too ;-)
Been there done that. This was my initial intention the first time i accepted an invite to a group sex party 8 years ago. It was extremely tempting to join in on the fun. I was eventually overcome by the temptation & joined the rest of the group. I love watching people fucking. Period. The experience is even better when the participants are attractive. It’s easier on the eyes.