Up for debate, I suppose, but cold beats hot any day. Why? You can always add more layers to get warm, but you cannot always shed layers or blast air conditioning to get cool. Carrying a pile of clothes through winter may be a nuisance, but sweating is far more unfortunate in my opinion.
Trust me, I’d be happy to run around naked to keep cool if I could (those who have celebrated with me know I’m not a big fan of wearing pants). Even without clothes, hot summer days can be unbearable and impossible to escape. No thank you. I’ll take a blizzard & parka over a heat wave & tube sock any day.