I'm arguing for winter.
I'll start with temperature.
Winter is cold summer is hot. Exact opposites. Winter is better however. You can wear layers to warm up and you can buy hamdwarmers. However in summer no matter what you wear it is still unbearabally hot.
I have to find a mutual agreement with the exact opposite point. But in winter there is a constant threat of hypothermia. Yes you can get sunburns in the summer but there is always a treatment and you can wear sunscreen. Also in the summer you van jump in the pool or get a natural golden tan. Where in the winter it takes time and energy to produce body heat for yourself. Plus getting a fire started in rigid temperatures is just to much work!
Yes but in the summer the sports are all pretty much at no cost (providing you live near or on a lake) Also there are virtual machines that give you the same experience as skiing at a lower cost plus you snug and warm. And you can still treat yourself to a hot chocolate afterwards
they have the machines at sportplexes/ centers. Some people would not want to get into skiing for the fear of hurting themselves. This provides a safe environment for a person to see if they actually want to do it before investing in passes and equipment.
also in the summer you can take trips to places that would probably be harder in the winter on account of having lug your things with you everywheres