This is basically cultural. In my home country straws are basically something small kids use. There are just a few beverages where a straw really adds some value, like some alcoholic drinks with plenty of floating stuff and milk-shakes.
If anything, straws make some stuff TOO easy, like drinking loads of soda while driving, and this is not good for you.
I think that a lot of problems could be solved by people just consuming less of some stuffs, instead of trying to find a technical solution to the present problems of consuming some of that stuff.
