ViceVersa
Well, I can't speak for anyone else, but we try to use our central heating for the absolute minimum time possible, so maybe we're among those people you're talking about, Rosie51.
Even on the very coldest of days, it might only be on for an hour or so in the morning and again in the evening. The rest of the time, we just layer up and make do with our woodburner - but again, it just goes on in the evenings.
I think I've posted before about sitting here typing on my laptop with gloves on, clad in several layers to try to keep as cosy as possible during the winter months.
Except that however well wrapped you are, you will still be breathing cold air into your lungs and not only will this endanger the health of anyone with respiratory problems or heart disease, but will also put you at risk of developing such medical problems. It also leads to your home becoming damp and the growth of mould and mildew. The fact that you cannot see condensation and mould does not mean that both are not present and again, breathing in both can lead to respiratory problems.
Personally, unless you live like this in winter because your fianacial resources do not rise to any more (have you checked you are receiving all the benfits you are entitled to?), I think what your doing is not a cause of pride, but more a pointless exercise in masochism, which you think is impressive.
We keep our home at a temperature that is comfortable for us when wearing ordinary winter clothes, which I would describe as two layers of clothing made from warm fabrics. I have Raynauds syndrome so do wear fingerless gloves when that is causing particular problems, but that is all.
I cannot think of a single good reason why anyone who can afford their heating bills, should want to live in anything but a normal comfortable temperature. What that is will vary from person to person, but I would say, keeping the inside of the house consistently at a temperature between 18 - 20 degrees.