Daft safety rules

Our house has had a loft conversion, so it occupies 3 floors. Apparently building regulations require it to have self closures on all doors on all floors.

Now I can see the idea and understand it in a house spilt into bed sits or similar. But in a family home it must be much more dangerous. Not only is there the risk of trapping fingers, no family can live with doors closed all the time. So all that happens is that doors get propped or wedged open. This makes it far more difficult to close a door if a fire does occur.