I think there are valid points here both within the question and within Chuck's answer. Sometimes the individuals who complain the loudest about something, are indeed the one's facilitating the issue. I believe there is also another aspect to this.
With human progress and the advent of technology. Television introduced serial dramas, one category being soap operas. The whole premise of these was to bring regular drama to the family home, as entertainment. A more available medium than waiting to feed Christians to the lions (as an example, the modern day version being not unlike spectator sports). I believe that as we have been pulled out of our nature hunter and gathering states and being closeted into our technological worlds, we have a lot of excess 'adrenaline' that was necessary for our survival. I believe the human need for these natural battles have been transposed into a need for 'fabricated' or man-made battles.
However, I do not regard all protestations to be regarded as evidence of a masked subconscious (or otherwise) desire. As with the advent of technology has come the internet and the phenomena of online social networking. Bringing a, previously impossible, mixture of individuals together. This aided by the anonymity, so perceived safety of online communication, has led to a reckless bravado when dealing with conflict. The average user of these networks, does not consider the immediate possibility of threat or consequence of aggression, within online conflict; as compared to having an episode of road rage and risking the possibility of upsetting someone with a shotgun in their vehicle, and a willingness to use it.
Coupled with the difficulty of online communication. All body language; voice intonation, facial expressions, hand movements is removed. There is a great range in individual verbal skills when dealing with potential conflict, I believe, more so when these are being translated through an individual's literacy skills. So the potential for misunderstanding and frustration borne from the inability to communicate effectively is far greater than in face to face interactions.
The enormous variance of culture and languages, almost begs for misunderstandings. As what is commonplace within one location, could be a jailable offence elsewhere. An example being, where I live, we swear (curse) as part of our day to day vernacular. It is considered normal to "knock", which is insult lightly our friends. It is a sign of affection. To "bignote" oneself or ingratiate oneself to others, can be regarded as undesirable and fake. Now take that to many places and it's a recipe for disaster and it is hard for the natural cultural style of a person not to surface.
Basically, these factors all form a melting pot for conflict, arguments, perceived insults, retaliatory insults... "dramas". It is very possible for some people to get very sick and tired of this. Given that this type of technology is still in it's infancy, really, it wasn't around when I had my first child, it takes time for people to develop skills to navigate through this intricate maze of networking. Given that the majority of these sites, encourage people to actively display their "status", it makes sense that some people will put the sign on their electronic door saying.. "No more drama".
As to what proportion of individuals fall into which category at what point and for how long... It's like asking.. how long is a piece of string.
in response to your comment. I realize I have overlooked a pertinent point.
Stable, mature individuals with intact boundaries will be less inclined to involve themselves with drama. A propensity to become entrenched in drama reflects a degree of emotional immaturity and can also be a reflection of an emotional neediness or a present inner conflict of unresolved issues,. These individuals can carry unresolved anger or may be perpetuating a victim mentality. The involvement in drama and the resulting lack of resolution can lead to an adverse reaction to the conflict and the instinctive reaction to keep the drama away, hence the declarations of "I hate dramas".
As the underlying individual conflicts have not been resolved the individual is likely to become embroiled in another conflict resulting in drama.