I'm not saying it shouldnt exist or that it doesnt have uses. I probably would like to have the option to turn it on or off. I think it is a bit like having the front objects transparent, so it could, for example, help in aligning the back object to the edge of the front object without changing the view window.
But if they have to give the 'artist-line' users only one of the options, it should be the one with hidden lines. Pros (a) should have better abstract  depth perception so a few extra lines shouldnt affect them
(b) may need precise positioning of something behind and not have the time to switch windows all the time.
I think they just did everything in a terrible rush and therefor bugs and non-sensible decisions crept in. And a lot of them.

"I paint that which comes from the imagination or from dreams, or from an unconscious drive. I photograph the things that I do not wish to paint, the things which already have an existence."
Man Ray, modernist painter
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