Why is the concept of a tamarin being 'friendly' in a pet setting often misleading?

Answer

They retain wild instincts and are not domesticated

The reality diverges from impressions because tamarins retain wild instincts and are not domesticated, making them unsuited for average households.

Why is the concept of a tamarin being 'friendly' in a pet setting often misleading?
behavioranimalMonkeyPrimatetamarin