Happy all the time!

Does it ever bother you to think that someone can be smiling and happy all the time without the assistance of medication or serious drug use? I mean c'mon how can someone always be so cheerful and optimistic like that... Over the last week or so it has come to my attention that there are certain people who are indeed like that and I find it very odd and somewhat scary to be honest! In thinking about it though what is it that makes these people so happy all the time? Or is it that the majority of these people are like that only in public forums? And if that is indeed the case what do they do when they get home? I would presume the majority of them are binge drinkers to an extent. Getting home polishing off a bottle of whine or smoking a fat "J". But in all honesty I feel these people take their aggressions and frustrations out on their loved ones! Too much time to think at work!!! SMH