I believe the idea from above poster is not that you should stop heating and "live like a caveman", but that many people would make great savings by wearing a wool sweater on top of their t-shirt and turning the temp down a couple degrees. As a case in point, I never spent a winter with 22°c indoors, usually it's around 18-19°c.

That being said, as someone else said, controlling humidity is also a concern for the long-term viability of buildings.

Anything under 21 during night for me makes it uncomfortable to sleep. At 22 for me it is the perfect temperature and in the winter I wear a normal clothes, too cold for t-shirts at 22.

Jesus, I got uncomfortable just reading this. 21 at night would be insufferable for us (we’re in western Canada).

17 at night, 19.5 during the day is as hot as our house has ever been in winter; though with a new baby I suspect that might change by 0.5 for a while.

I'm in Ireland. My ancient cottage gets down to about 13°C with every-other-day heating, even if it's 0° outside. Rarely colder. I do indeed just wear a jacket or a sweater, and I have a heated blanket on the couch. You get used to it and start to prefer it! If it were 22° in here I'd be in a T-shirt opening windows to let some heat out.

22 degrees is pretty hot honestly, t-shirt and shorts temperature, is that what you're used to?

I'm currently happy at 18, it's pretty nice if you're a bit active.

Maybe we can just agree on this: set the temperature in your home to whatever temperature you feel like. Depending on the setting that might be more or less expensive but that is an optimization problem for you to solve, not others. Don't pretend you are some kind of climate change martyr because you are wearing a sweater.

> Don't pretend you are some kind of climate change martyr because you are wearing a sweater.

Where did i say or imply any of that?

This is more of a general comment on an emergent theme of many comments on this post. Not directly at anyone in particular.