Mick,
If you were seeing that sort of wear on the point of your nib, there's a high chance it was an untipped pen. As many of the cheaper makers of pens were going into oblivion because of the ball point in the 1950's/60's/70's they tried to compete by reducing costs to below the minimum. One way of doing this was to fold the tip of a steel nib over so it looked like a proper 'iridium' point, and another (even worse to my view) was to braze a tip of 'something/anything/who cares what so long as it looks like a tip' (often brass) on the end. The wear properties of both these methods were very poor and you would get the sort of wear you describe at pretty much the speed you describe. It was done mostly to school pens by brands in the UK like Platignum, Osmoroid and one I never had personal experience of: Mentmore. Quality brands (Onoto being one in 1956) refused to join in the race to the bottom and quietly ceased production without compromising their quality.
If the tip had been proper 'iridium', as found on something like the Parker 51, it takes decades to make a significant foot on the end. I was given a Parker 61 at age 13, and used it as my only pen for 25 years writing an average of 20 pages a day for most of that. With a loupe I can see that the ball shape has flattened a little, and it's just possible, though difficult, to feel the foot I wore into it when changing the angle I hold the pen at. (the body of that pen gave up, and I now have that nib in a Parker 51). That is the level of wear you should expect from the 'iridium' on a nib, and it applies whether you are right or left handed.
These days, I have discovered I prefer broad italic nibs, and deliberately grind the tips of the pens I get to make them into the shape I want, so I don't have to wait 50 years to wear in the nib to eventually get an italic shape…
Regards
Richard.