Yep,some people are truly cheerful, smiling no matter what.Once I was in a public place with a couple of my friends.We were enjoying ,taking snaps and such.I noticed a gentleman around 60 ish watching us with a wide grin and feeling happy for our enjoyment.He was sitting alone on a bench watching us.He actually crept us out.Then all of a sudden he came near and asked if we wanted him to help take a photograph of all of us together.One of us was carrying a camera and if all of us wanted to be in a single snap then some one had to take it outside from our group.But we freaked out and said no thanks.The man went back to his bench carrying the same grin.My friend thought the man was homeless and was going to ask for money after he helped us.Another friend thought the old man was stalking us and such.After sometime I noticed a young couple and young kids came running and hugged him.He was visiting this place with his family.Not a homeless or conman.So some people can be really overtly nice and content I guess.