Voice will only do it, when I can actually speak on my mother tongue and be understood.
Being forced to use foreign language to talk to my car system and playing accents until the system finally gets it, means I don't bother using it at all.
As for touch screens, having had a near miss with, I also avoid using them as much a possible.
Languages is perhaps one of the largest hurdles for voice at this point. I can't even get my browser to understand that I switch between Danish and English multiple times a day and adjust spell checking accordingly. So having a voice controlled system that will understand multiple languages simultaneously doesn't seem likely in the near future.
Being forced to use foreign language to talk to my car system and playing accents until the system finally gets it, means I don't bother using it at all.
As for touch screens, having had a near miss with, I also avoid using them as much a possible.
I need tactile feedback.