climate change aka global warming = the earth's average temperature will go up slightly.

this is a good thing, because it will mean a small increase in heat deaths, but a much much larger decrease in cold deaths, for a net overall benefit to human health and safety.

There are other arguments for why global warming is good, such as the GLOBAL GREENING brought on by the fact that higher temperatures and more CO2 massively boost the farmable land and general plant biomass in the world, but OP's point is one of the significant arguments in favor of the fact that global warming will be a net benefit to society.

If you study the science, as I have, then you know that there is no scientific evidence of any ill effects from global warming other than sea level rise, which is easily adapted to. There is no evidence that global warming causes any increase in natural disasters of any kind, be it wild fires or hurricanes or volcanoes. Nor is there any evidence that a hotter earth means more deserts. Quite the opposite. The earth was 12-15C hotter in the past, and at those temperatures, it wasn't a barren hellscape, it was a lush jungle planet. High temperatures means more evaporation, and therefore more rain.