Thus in reality...
Thus in reality, there are very few people that he would actually be able to interact with in his life. It is highly possible that those defects which he sees in other people do not really play any role in his interaction and contact that he has with them but it will unfortunately take him away from the societal life that he leads amongst the people and thus, he will be dragged towards a life of separation and seclusion from society.
Therefore for such a person who is inquisitive about other people and who also inherently entertains bad thoughts about others, it would not be possible for him, while in this (mental) state, to analyse and investigate (each individual person). Therefore, he would not be able to accept the faults, inner weaknesses and problems that other people have and this would cause him to not have any relations at all with others.
In any case, it is very difficult to find people who are perfect and are completely without any defects. Obviously, through one’s own inquisitiveness, each and every person would be able to find the hidden defects and covered faults of other people and because of this, such a person will - within himself - feel a need to observe some sort of seclusion and distance from others.
Thus, in addition to having bad thoughts about other people and prying into the affairs of others, this group of people will also become reclusive and seclude themselves and will not be able play a constructive role within society.
Loss of Freedom One of the greatest blessings for a person is to have freedom in his or her actions and by Islam introducing the concept of element of general overseeing , it has appointed the responsibility of the control (of society) and the freedom of humanity in the general overview to the laws of intelligence and the religious regulations.
Thus, the freedom that one has within a society is within the framework of the firm, determined laws of Islam and as a result, the members of a society are free (to do what they want) so long as their own happiness (in the next life) and the freedom of other people is not encroached upon and as long as they do not go towards any of the prohibited acts and refrain from performing the obligatory acts.
Islam has limited the internal (intellectual) freedoms of a person by giving him a hidden police force (within himself), and by establishing the governance of true faith, and has placed limits and guides (on his thoughts).