When I was a kid, that was what I believed in too. And that is what most people would say if they heard it for the first time.
What most people do not do while saying this statement is taking the context of the change in average temperatures around the world. What should be shown are graphics like this XKCD [1], which puts in perspective the average global temperatures in past 22,000 years. (spoiler: the last time Earth's average global temperature was 4 degrees below the average global temperature during the 1970s, the Earth was covered in sheets of ice). This is where we have well and truly allowed climate change deniers to take over and spread misinformation.
What most people do not do while saying this statement is taking the context of the change in average temperatures around the world. What should be shown are graphics like this XKCD [1], which puts in perspective the average global temperatures in past 22,000 years. (spoiler: the last time Earth's average global temperature was 4 degrees below the average global temperature during the 1970s, the Earth was covered in sheets of ice). This is where we have well and truly allowed climate change deniers to take over and spread misinformation.
[1]: https://xkcd.com/1732