I get what your're saying John but can you do me a favour and try it at several doors, I mean really open and close them, enter and reach for the switch on both sides.
I've tried, and it seems to confirm what I suggested - i.e. that one "cannot please all of the people for all of the time".
I would imagine we would agree than when one is going through a doorway in the direction such that the door opens
away from one, then any switch 'on the other side'
must be on the 'lock side', since one would have to go on a 'trek' around the opening door before one could even see, let alone operate, a switch on the hinge side.
The question therefore only arises in relation to going through a doorway in the direction such as the door is open
towards one. In that situation, experimentation seems to confirm what I said before - that it depends upon 'which way one is going to go' after walking through the doorway. If the answer is 'straight on' (e.g. if it is a door between two rooms, fairly central in the rooms' walls), then what one naturally does is opens the door wide (to something like 90°), so that one can 'walk straight in', facing forward, in which case, I don't think it makes much difference what side a switch (on the other side of the door) is - one will have to twist one's body/hands the same amount in either case.
However, taking my house as an example (and a hotel or suchlike would be an even better one!), many of my rooms have doors opening onto corridors, with the doors opening 'into' the rooms in question - i.e. the doors open towards one when one is walking from room into corridor. It that case, as I previously suggested, it really seems to depend upon which way one is going to walk once one gets into the corridor. If one is going to walk in the direction of the door's hinge, then you are probably right in saying that it would be more convenient/natural to have a switch outside that door on the hinge side However, if one is going to walk down the corridor in the direction of the door's lock, then it is probably preferable (more 'natural') for the switch outside the door to be on the lock side.
I think the point is that if one opens a door (towards one) with the intent of turning right or left immediately after going through the doorway, then one will already have 'pointed one's body' somewhat to the left or right (towards the hinge or lock) as one opens and steps through the doorway - so which side is the more convenient/natural to have a switch will be totally dependent on which way one is going to turn (hence which way ones body will be pointing as one goes through the doorway.
That's how it seems to me - both in theory and after some experiments, anyway!
I'd not given it a thought before.
I'm not sure that I had particularly consciously, either.
Kind Regards, John