Hi there, Tox pusher. Did you not even read the very first few sentences he posted? The one that said :
I use Skype because for $15/m I can have unlimitted calling to local numbers in Thailand, from the US. And can make unlimitted US calls, too. Outbound only, inbound costs extra. I have it for my wife.
So you like Tox. That's great. It doesn't have all the features of Skype. Some of that is good (one-click government eavesdropping) some of that is bad (POTS integration). And yes, one of the 'features' of Skype is the fact that it's got a very large user base. So you're not just convincing Grandma to swap over, you need to convince Grandma's friends that she also talks to, and so on and so forth. And they just don't see the need for 'secure encrypted communication that only they have the keys to'. They're just (mostly) talking shit and waving to each other.
Open your eyes a bit and admit those problems, and people will start taking your opinion more seriously. Tox may be a solution for you (and maybe me, it looks interesting), but it's not a solution for the masses, because they already have an adequate solution.