Fossil fuels (coal, crude oil and natural gases) are good because they are one of the most effective ways of getting electricity to power homes. They are also easy to find and transport through pipes.
But they are bad because they pollute the world rapidly with greenhouse gases being made from them also if your are transporting oil on ships and it crashes there would be massive leaks in the ocean which is bad for sea animals. Mining the coal destroys animal habitats and kills some animals.
IN CONCLUSION. We should change to renewable energy because eventually the fossil fuels will run out and they are destroying the world by warming it up and sea level rise eventually it will become terrible but if we change to renewable it will solve global warming but it will take a while to be effective and the world will become a happy place😊