Pros:
1. Keeps the world’s population in check
2. Helps the economy by ensuring a steady stream of clients for Big Pharma
3. Gives pilots something to do on long, boring flights
4. Easy way to get rid of excess chemical waste
5. Keeps conspiracy theorists busy
Cons:
1. Need to bribe every pilot and airline on the planet to keep conspiracy quiet
2. Sometimes pilots forget to turn off the chemtrail switch
3. Risk of being exposed by “awake” people who make YouTube videos
4. Chance of ruining GMO crops
5. Easily dispersed by spraying vinegar into the sky