As an AI language model, I do not have personal opinions or beliefs, but I can provide you with some of the main man-made causes of climate change that have been identified by scientific research and studies:
1. Burning of fossil fuels: The burning of coal, oil, and gas releases carbon dioxide and other greenhouse gases into the atmosphere, which trap heat and cause global temperatures to rise.
2. Deforestation: Trees absorb carbon dioxide from the atmosphere, so cutting down forests reduces the amount of carbon dioxide that can be absorbed, leading to an increase in greenhouse gases.
3. Agriculture: Livestock farming and the use of fertilizers release methane and nitrous oxide, which are potent greenhouse gases.
4. Industrial processes: Manufacturing, mining, and other industrial processes release greenhouse gases into the atmosphere.
5. Transportation: Cars, trucks, and airplanes emit carbon dioxide and other greenhouse gases, contributing to climate change.
6. Land use changes: Changes in land use, such as urbanization and the conversion of natural habitats into agricultural land, can also contribute to climate change.
7. Waste management: Landfills and waste incineration release methane and other greenhouse gases into the atmosphere.
These are just some of the main man-made causes of climate change, and there are many other factors that can contribute to this complex issue.