Tamas is one is one of the reason why a person fails to grasp the subtleties of spirituality
It’s overwhelming influence makes one love sleep. Be lazy. Humans are skillful and they hide their laziness in a variety of ways including procrastination, excuses etc
This gives unreasonable anger but it guises itself with defiant indignation.
I see the works of the politicians in many parts of the world. Many are full of this and they abuse their Power
Such people are generally thrown into lessor worlds where misery is the rule.
Most People have a combination of Tamas plus Rajas plus sattwa. Thus they come back to earth instead of going to demonic worlds.
The demonic worlds are truly scary
Bhavin