Many more people die from cold than from heat... a lot more.
Two large studies conclude that many more people die from cold-related issues than from heat. One study of cold-related deaths (Vardoulakis 2014) in Australia and in the U.K. found that 15 times as many succumb to cold than heat. The largest study of temperature-related deaths (Gasparrini 2015) found that people are 20 times more likely to die from cold than from heat.
Global warming saves lives.