Immediately switching to renewable energy is an unrealistic goal

It is not economically possible or realistic to expect that fossil fuels will stop being used immediately. Entire countries utilize fossil fuels and oil as their primary export, and saying that would immediately stop would spell ruin for entire economies and the humans who live in them. A transition to alternative energy has to be created, but it could take many years to build up the infrastructure necessary to replace fossil fuels as the main energy provider and export for an entire country, let alone the entire world. Also, this level of overhaul would require an extensive amount of financial resources, which is not something that all countries or organizations have at their disposal. The Paris Agreement from 2016 took a more realistic approach, with all signees agreeing to keep their emissions under a certain level to at least slow climate change to some degree. The agreement also lent support to countries that do not have the economic resources or infrastructure to make that transition on their own. ^[1][2][3]