I think it's a matter of priorities. Quite a lot of people are now on their second or third smartphone, and will already have cables, and, for that matter, headphones / hands free sets.
I see it as a positive thing and I'm glad my 630 came without that stuff - not only does it reduce waste (and reduce the environmental impact of manufacturing less stuff to begin with), but it also means they could use the money to put a nice polariser on the screen and keep the price low instead.