We have a wood burner. It's used when the weather gets really bad to supplement the heating as there are usually a days in February when the ice comes when you wouldn't think the radiators were on (and we have cavity wall insulation/loft insulation and double glazing). We just live in a very open semi rural area and the wind blows around the house nicely!
It's also used when we have a power cut. It was our only source of heat when Storm Eunice put our electric out for a few days earlier this year so with a gas hob we were able to eat and stay warm. A few of our neighbours had got rid of their open fires a while ago...very silly thing to do. Keep it clean and maintain it and it's there if you need it. We probably have a power cut a couple of times each winter and it's handy to have.
We have a lot of trees in our garden that need cutting back every few years. We ask for the logs back, put them under cover but open aired and dry them off for a couple of years. We're now using logs that were cut 6 years ago on the rotation. Which shows how often we actually use the fire.
The chimney is swept every year - even if we've not used it, just in case anything has got down it and to check it's all safe. It has a bird's nest cap on it as we had an old bird's nest on it when we moved in.
It's fully lined and we have carbon monoxide alarms in the living room and in a bedroom that's above the living room in case of chimney fume leaks.
I'm not giving up my, probably, used for a week each winter (if that) wood burner until my next door neighbour stops putting their car engine on to 'warm it up' then disappears indoors for five minutes every single working day of the winter. Totally unnecessary. Especially as they have a garage.
And, my fuel is a by product of the trees I've had to pay to prune back so it's 'free' from that point of view.