Entertainment takes us to a different world and feeds our need for fantasy and an escape from real life.
This is especially true for entertainment that is more public or provided by the media and entertainment provided by films, theatre, music, and all forms of creative art. Films and theatre transposes us to a world of fantasy and grabs our attention so we remain engrossed as almost a part of this alternative reality. Entertainment could also be in the form of magazine stories and gossip or even celebrity culture and the psychology of entertainment could also explain the extreme craze of celebrity culture that we have in the modern world.
Entertainment could trigger emotional involvement and emotional reactions such as happiness, sorrow, anxiety, fear and despite these strong emotional participation, there is little or no physical activity necessary on the part of the viewer. This active-passive process is the main attraction of entertainment as entertainment enables us to be both active (in terms of emotion) and passive (in terms of physical or voluntary mental involvement). Entertainment means like films are influential yet they influence subtly rather than aggressively and this subtle influence seems to work better on the human mind than any aggressive forms of influence. We see work as duty and entertainment as pleasure although both involve some form of emotional involvement. Work at the same time requires voluntary participation, decision making and physical involvement along with emotional involvement.
Yet why is work perceived as something heavy and entertainment as methods of relaxation?
The answer is unpredictability. In case of entertainment, in most cases we may not even know what to expect from a movie or a music video. This unpredictability triggers our interest as we are unable to predict what emotional states would be evoked during this mental adventure. Entertainment is usually a form of mental and emotional adventure. In cases where we do know what a movie is about, it is the feeling of emotional familiarity that drives us to experience what we already know. Suppose a video game gave us a pleasurable feeling or evoked aggression and competitiveness in us, we go back to feel the same emotion as it was pleasurable or exciting. Stretched too far these forms of entertainment could easily become addictive.
Coming back to the distinction of work and entertainment or play, work involves responsibility and despite the emotional involvement in entertainment, apart from being a passive participant, we do not have to be responsible for anything, there is no problem solving or decision making and that is how entertainment in all its form is so pleasurable as the right brain activities of decision making and the cortical regions of the brain are not activated completely yet the pleasure sensations and emotions such as the hypothalamus and left brain activities are usually activated so we tend to associated entertainment with emotions rather than problem solving and decision making.