There are good and bad things about oil use.
Good
Well, oil does run many things in our country, and without it, alot of our technology, such as cars and factories, would be useless. Cars and other vehicles are used for transportation of people, goods, etc.
Factories mass produce countless items such as cars, clothes, you name it! Macines inside factories need oil to work and create these goods.
Bad
Oil does add to Greenhouse gases, and is actually a significant amount.
@thelistman, actually, greenhouse gases consist of only 35-70 percent, and CO2 is anywhere between 10-25 percent. That percent may seem somewhat miniscule, but just that is alot.
Also, the oil companies are becoming corrupt and raising profits, so their pockets are filling up more by the day. Prices are skyrocketing, leaving many people in confusion on how to conserve their money.
I guess to add to more good qualities, you could say that many more people are riding their bikes, walking, etc.