Fuck winter.

Mosquitoes, expensive heat regulation… ye

Yep. When I was younger I didn't really care, but last few years winters have definitely impacted me. Not only is darkness and cold just bad by itself, but also you just want to stay home, not exercise because well outside is not really suitable for walks/jogs, and even inside muscles feel more tired and unpleasant, harder to get up in the morning in my experience because slight colder temp makes you sleep better or something. And then you end up having unhealthier lifestyle because well no motivation and more feel of hunger.

in summer its pretty much the opposite and that's why its way easier to live good. You actually want to go outside once in a while, easier to diet(if thats relevant), body performing better because warm unless its really warm etc.

winter is the only thing keeping me from killing myself

Yeah I would imagine. Obviously don't know how winter is elsewhere, but that is how its here at least. But some people who don't experience winters like this like to fantasize about "proper" winters like snow and such but don't understand the downsides. Like imagine waking up 7AM and leaving for work/school = its dark, school/work day over at 4PM and leaving back home = its dark. There's like 5-6h of sunlight per day and mostly when your at school or work.