It's extremely hard to agree with Stallman, but you have to admire the fact that he lives by his principles.

He truly believes the world would be a better place if all software was free, and he lives his life in support of that. People rarely devote their lives to a single principle like that.

Skype might be convenient and wonderful in the short term, Stallman believes that supporting it is not the right step for society in the long term.