I had a minor 'rant' about proper observation, to back that up, consider this ,just how many times have you noticed that people indicate just before they turn, or even as they turn or worse after ! Doesn't seem to be they have observed, just I'm turning in here better indicate.
So ,all the other responders to this moan, consider this ,is that what you mean by indicating regardless, as I have been a 'victim' of this.
Another pet hate of mine is in proper road positioning , it goes in hand with lacksidaisal signalling, people turning right invariably 'cut' the junction, they turn in across the left side of the junction , just where an emerging car or cyclist may well be, you cannot possibly see into a road that your turning into, especially these days as the roads are congested.
Is this innate Laziness or complacency, I have always positioned myself correctly to see where I am going,
It's Observations, observations, observations, makes you a safer driver / road user.