What would life be like?

What would life be like if...? I don't know it's up to you! Here are the directions for the game:

One person will ask a question about how life would be if something occurred and another person will answer it and then ask another question.

Examples:

Lillian: What will life be like if insects ruled the world?

Atticus: I think that the insects will treat us like pets or even eat us.
What will life be like if elephants were smaller than us?

Then another person will answer and so on....

So lets start with this question:

How will life be like if dinosaurs were still alive this day?
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