@mikelima -- just over border in Slovenia MMS are included in monthly subscription and is not such cost. There are lots of people that don't use email or have internet access on phone at all, there are also areas where connection is so bad you don't get reasonable speed, for ie. somewhere deep in woods :P and in such occasion MMS is far better solution than email. I can assure that at least with Nokia (dumb) phones MMS work realiably and I actually don't remember that ever failed.

OTOH, services like Viber, Wazzup etc. are useless for me because I am not always connected (my free will, actually).