Because that is where the crosswalk is.

That's no different than saying "because the law is the law".

If it is possible to cross sufficiently safely without walking to the cross walk why walk to the cross walk?

The traffic planners put the crosswalks where they are in order to balance convenience for pedestrians with smooth flow of traffic. Jaywalking subverts the deliberate design and overall efficiency b

Normalization of Deviation.

Eventually, everyone would be looking for a chance to cross the road without using a crosswalk = jaywalking, which is exactly what has become the norm in some countries.

And that is not a problem in most countries. Jaywalking as a 'crime' was invented by the car lobby. https://www.bbc.com/news/magazine-26073797

In some countries there are no crosswalks at all because everybody jaywalks.

In some cities, you put your life on the line every time you cross the road.

I am not exaggerating.

Do you really want that to become the norm?

Obviously not. But you are presenting a polarized pair of scenarios which I don't agree are the only possible outcomes. I think we can strive for something in the middle, between chaos and robotic like use of crosswalks.