The interest is a motivation that is transmitted when wanting to obtain something not reached or that requires an effort to achieve it.

 That is transmitted in the human being mainly in the curiosity of knowing everything and possessing it since it represents something unattainable. When you acquire interest in something or someone already fulfilling a goal, that fills a part of our ego as people and this allows us to get rid of the curiosity that has generated that interest and starts the demotivation to move forward to what is already known .

 People love challenges and obsess about having something unattainable for them, that is why they strive to achieve it and do not pay attention to the best choices that life presents to them because they will always have that uncertainty of wanting to have the attention of those who do not know about their existence for different reasons but with a mass consequence offering a single focus to that goal drawn by that person to feel the lack of motivation to care for other people.

 This can also be deduced as a social effect where most people seek the acceptance of groups of people of different tastes and with different routine activities that vary from those seeking to integrate into the unknown, with the social approach and the breadth of his circle of dealings with people, being very influential, always look for those human beings that are different bringing as effect a single focus seeking acceptance to the unknown and leaving aside the preferences of those people who are interested and approaching diminishing importance to its inclusion due to the lack of motivation that this produces towards the person.

 That is an endless circle where social and human maturity allows this routine to be cut and we value people for what they offer us positive and stay with those who really want to do us a good and not looking for other incessantly seeking its acceptance.