Top 3 reasons for a plant-based agriculture

There are numerous reasons for a purely plant-based agriculture. However, from our point of view there are 3 reasons why climate and environment and thus our livelihoods cannot be saved without an immediate phase-out of animal husbandry and fisheries:
 
1. Collapse of biodiversity: further details and references
2. CO2 in the atmosphere: further details and references
3. Absence of cooling aerosols further details and references