I find hot weather to be worse. Winter was definitely preferable for me. I'm saying "was" because there aren't really cold winters anymore nowadays here in Finland. There has barely been any snow for years.
I also remember when in my childhood we had incredibly cold winters here. Hell, the country was kind of known for that. Now it's funny that the stereotype lives on, but there is basically no winter here at all. Yes, climate change will destroy humanity, or more aptly, humanity will finally pay the bill for its irresponsible and unsustainable way of life. What did we expect? The greenhouse effect has been known for about two centuries, and yet we've done nothing. Fossil fuel companies have been lobbying against all policies that have been in favor of the environment, and continue to do so vehemently. Greed and money always wins at the end because those with money ultimately control everything.*Stuff about climate change*