My main # now is Google Voice. For the past 4 years, there was just 2 instances that I needed MMS.
What's frustrating though is the inability of Google Voice to receive SMS from short codes. Craigslist and Paypal also don't verify accounts with a Google Voice number.
Perhaps so, but you can't deny that for wider adoption, Google Voice needs to do something about both Short Codes and MMS. Lack of MMS is a dealbreaker for a lot of people, and "text it to my email address", as I explain to friends, is like a paradigm shifting without a clutch (with apologies to Dilbert).