I bet, a lot of people felt that way throughout history.
However, given we have the internet, the best access for information we ever had, it's really ridiculous how little people seem to care about spending some time to critically think about their election choice.
Although I also think there is a correlatin between number of people and detrimental climate effects, it's wrong to reduce the causes to that. Despite the fact that "the richest 10 percent of people produce half of the planet’s individual-consumption-based fossil fuel emissions, while the poorest 50 percent — about 3.5 billion people — contribute only 10 percent", it is mainly due to our modern way of life and production. As you probably know, the climate started the downwards spiral since the industrialisation. If we werent producing so insanely much GHG-emitting stuff, it wouldn't be such a problem. (Regarding temperature alone. There are of course also other detrimental effects on our eco-systems due to things like overuse of fertilisers for example.)