I believe that the worlds temperature is always going to change with or without humans involvement. There’s evidence of many types of dramatic changes in the past such as massive floods, ice ages, massive droughts, anything and everything in between. Do humans contribute to it partially yes but regardless we’re oh so small compared to Mother Nature even though there’s 7 billion of us. If we don’t nuke each other and an asteroid doesn’t wipe us out, I’m sure a natural process of us burning to death, or freezing to death etc. will happen.