Animals do it largely for the REPRODUCTION, but so-called Social Animals (People) do it regularly thinking that it will give them SATISFACTION.

Foolish man, what do you bemoan, and what do you fear? Wherever you look there is an end of evils. You see that yawning precipice? It leads to liberty. You see that flood, that river, that well? Liberty houses within them. You see that stunted, parched, and sorry tree? From each branch liberty hangs. Your neck, your throat, your heart are all so many ways of escape from slavery … Do you enquire the road to freedom? You shall find it in every vein of your body.

A person has to be too much selfish to fulfill own wish of being surrounded by many people often, else s/he feels suffocated due to hatred or hidden jealousy from the most public around her/him.

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