I think there are not many who never even signed up with any of these platforms. If not anything else then at least out of curiosity I too have signed up on all

I think there are not many who never even signed up with any of these platforms. If not anything else then at least out of curiosity I too have signed up on all three you mention. If you change the question to "never ever used past the first 2 weeks" - sign me in to that list.