Is a fireplace still useful in new buildings today - experiences?

I'm not a fan of fireplaces in new buildings; even in winter, the air created by them bothers me, including the extra strain on my own lungs.

The trick is to close the fireplace door again after lighting it.

The simple "tin cans" do create a considerable airflow over the thermals, they are designed that way on purpose.

"Tin cans"? I thought we were talking about a professionally planned and built chimney. At least in my case, the guy who plans and builds the thing is called a "stove fitter" or also "chimney builder," not "tinsmith" or hardware store employee. Seriously, I actually didn't mean hardware store stoves (aka "tin cans"), but masonry and plastered chimneys with a suitable combustion insert.

Ever heard of external air supply? That’s standard nowadays!

Calm down, of course you are entitled to your opinion, but please let others have theirs too.

Yes, we had fireplaces in our previous house and in the apartment before that... in the apartment we used the fireplace, but only because it was an old building with terrible insulation... the radiant heat had a big advantage there...
In the house, there was one with external air supply... we simply didn’t use it. For me, radiant heat offers no advantage at all when I have a top air-conditioned house everywhere. On the contrary, I find it disturbing. I enjoy my constant room temperature and constant humidity, which are regulated to be optimal for our needs... if I want heat or other climatic conditions, I go to the sauna in the garden or go on vacation.

I'm not a fan of fireplaces in new buildings, even in winter the air generated by them bothers me, including the additional burden on my own lungs.

How can I understand that? What air is generated and what does the additional burden on the lungs consist of? (I mean the question seriously. No irony.)

How can I understand this? What kind of air is produced and what does the additional burden on the lungs consist of? (I am serious about the question. No irony.)

A bit confusingly written by me:

1) I am not a fan of fireplaces because they release a lot of fine dust into the air in mass (not into your personal house, but into the environment); one can argue about that...

2) "the air produced thereby" in this context simply refers to the heat. It gets warmer, which I personally don't like at all in a house that is optimally climate-controlled for me through underfloor heating + controlled residential ventilation.

It is true that fine dust could rise around the house. It depends on the wind and the weather conditions. Isn't it even the case that there are already filter regulations or that they will come soon?

On point two, I also have to agree with Tego12. If the house itself with heating and ventilation already offers a luxury that can hardly be surpassed, such a fireplace makes no sense. I would probably also look for an alternative for the cozy time, even as a fan of a fireplace.