I could not have said that better. It isn't always the shine or the beading. The real proof is the resolution. Wax, when properly applied lasts a very long time (despite what a lot of people believe). The by products that promotes shine and beading will in time wear off, but the wax residue itself must be removed.
I once did a test on one of my older cars by removing years of wax build up on its neglected paint. I was quite amazed to see underneath its dull texture vibrant and shiny paint, like I never saw from it before.
That is also another reason why you don't necessarily need a lot of wax for basic protection. Of course I break my own rules, but dilligent washing and a good amount of wax is more than enough.
I once did a test on one of my older cars by removing years of wax build up on its neglected paint. I was quite amazed to see underneath its dull texture vibrant and shiny paint, like I never saw from it before.
That is also another reason why you don't necessarily need a lot of wax for basic protection. Of course I break my own rules, but dilligent washing and a good amount of wax is more than enough.