Bitcoin must to scale to more than 10 million odd people.
Again why?
If # of tx's was the #1 priority then why would you even have a 10 minute confirmation time?
And why bother with even having a 21M limit if all that mattered was the # of tx's?
Who said it was all that mattered?
They matter. They are not the only thing that matters but they do matter. To have 0 transactions you don't need any system. Problem solved! You see? it's just as ridiculous to say that it's ALL that matters as it is to say they don't matter at all.