Atheist should also believe in God:

1- When someone is dead why the family members become very eager to dispose the dead body as soon as possible, where is gone that love ?

Because, to whom we love he is gone from the body. Then question arises, who is gone out of the body? And why immediately the shining of the body also goes just after death?

That was the God in the form of divine light, who left the body at a definite time.

2- We can not take birth without parents, then how come this vast world take birth without a planner a designer or a creator?

I feel really very pity and compassionate upon those people who are not doing anything to earn what they should, but they are just busy in earning the illusion of God and not the God.

However, even being an atheist if someone is doing all the righteous deeds in the life and not jealous or hatred to anyone, and not supporting violence, and consuming pure vegetarian food and beverages, he will at least get again a human birth to achieve the Supreme and believe the Supreme, and at least shall not be dropped into hell.