Even before this event, the price of fossil fuels increase as the price of renewable sources of energy decrease due to new technology. These cleaner and then cheaper energy sources will allow humanity to put our thoughts and this cheaper energy toward more productive activities like producing enough food to feed the hungry. We would all benefit if we didn't rely on something that will eventually burn up.
Even if we neglect the data suggesting harmful effects of carbon fuels, we should move away from them on the basis that they are in limited supply. With energy consumption on the rise, it is only logical to upgrade our source of energy. Nuclear, solar, geothermal, and wind based energy production is the solution to the inevitable energy crisis.
It's a fact. Gas powered cars are producing carbon waste, which is going into the atmosphere, heating up the planet and causing health risks. So why are people still contributing to this? If they fully understood the risks, they would do something about it. If they became aware of what will eventually happen, they would stop.