you are taking this matter too personally. Please do not confuse my post with others that you feel personally attacked by.
You can and should do whatever you want in your house. Exactly right. I only pointed out that no residential construction project since 2000 has been built with doors under 2.11m. The reason for this is purely objective and factual: the average height of people has increased and continues to rise.
In residential construction, one builds out of financial interest and wants to have as many interested parties as possible, and regarding doors that led to the currently valid minimum height of 2.11m. That’s why I also brought up the point of resale value. If you don’t care about that, then don’t include that point in your considerations. If the people in your environment are not taller than 1.90m, then you don’t need to take that into account.
Why do I write 1.90? Because I reflexively still duck under doors under 2.11m, as they come so close from the corner of the eye. But that may not matter to you either.
Topic door handle: By the way, the height of the door handle is, of course, chosen so that as many people as possible, whether very small or very tall, can reach it well. So this rather supports my argument...