Answer:
Man's most important invention.
This is a pearshaped fruit with a rough leathery skin, smooth oily edible flesh, and a large pit in the center. It is most used in guacamole dip
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Sometimes you feel it weigh a ton. Yet it is nothing, but somehow still there. Makes you uncomfortable around anyone, But speak its name and it's gone.
What do people spend a lot of money on every year but never want to use it?
I am a rock group with four members. All dead one was assassinated.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?