So these products were made better by space research but of course that's no justification for the program because we're only seeing what is seen while ignoring what's unseen here-the things that the money would have been used for instead.

Several of those enhancements have rather dubious value to society as well.

Why, in your opinion, does the space program require justification? Is it the expense?

I would counter that the expense of a thing should not be the overwhelming factor in its consideration. Just because something is expensive, does not mean it is not worth doing. Otherwise, we would all be huddling in mud huts and carting around cow dung for a living.