Does Good Need Evil to Exist?

A couple of weeks ago I had a conversation where someone brought up this topic. I knew that Good does not need Evil because the Bible says that Good existed in the beginning and Evil came in later. However, I struggled to make a compelling explanation for what I believed, which was unfortunate because I wanted to look intelligent in the conversation.
 
The other morning the topic came back to mind. All of a sudden it clicked. Remember Romans 12:2, “…let God transform you into a new person by changing the way you think…” The answer was so simple. Because, as I said before, I was clueless as to this answer for a while, I’m going to be clear I think this was God helping me out….always. 

Can Good exist without Evil? Do they need each other? Does the balance of the universe depend on these two being equal and opposite forces? Here are the terms to keep in mind and the illustration I got for why Good doesn’t need Evil.

Good = perfection; something working 100% according to the Creator’s purpose
Evil = imperfection; a created thing working counter to the original purpose that the Creator intended for it

Illustration: 

[In a world where Good needs Evil]
Car Salesman: This is the best car we have on the lot. It’s the most balanced. Half the parts work, and half of them don’t.

[In a world where Good does not need Evil]
Car Salesman: This is the best car we have. It came from the best manufacturer, and all the parts work according to the manufacturer’s design.

Let’s follow this illustration a step further because my mind wants to, and why not? 

One View: Even new cars have recalls from the manufacturer. From the little, very little, I know about cars if the manufacturer messes up and the new cars have faulty parts, it is supposed to be their job to replace it for you at no charge. So should God “pay” us for His design flaws in creation which make Evil possible?

Another View: Evil is not so much like a recall as it is like a car accident. If I go out and wreck my car, the car manufacturer does not pay for my car to be fixed. I do. Why? Because the car wreck was my fault. It was not a flaw in the car’s design. The car worked great before I wrecked it. God’s design worked great before we crashed it.​

Any thoughts or questions? Please post in the comments below.