Positives: We would be less reliant on fossil fuels and have less greenhouse gas emissions. More people would walk, ride bikes, car-pool or use public transportation. There would be fewer cars on the road and fewer accidents which could lower insurance premiums.
Negatives: People would not be able to travel as much for work or pleasure. The cost of living would rise beyond the threshold of minimum wage.
Positives: We could curb the needless killing of homeless animals and lower the burden on shelters. People will be happier and healthier; studies show animals lower blood pressure and lower stress.
Positives: Obesity rates would probably go down. People might enjoy fresh air. We would enjoy being with other people rather than electronics.
Negatives: TV stations, cable and satellite companies, and the like may take a hit in their pocketbooks.
Positives: We would be more self aware. We would care more about issues in our society and the world. We would be educated in social debates, and form our own opinions rather than the opinions of the media.
Negatives: News can be emotional. Emotions can lead to unintended actions and health issues.