Let's first determine the definition of the word "we"...
Without going into detail, and if you're speaking in a general sense, WE can assume you mean everyone INCLUDING yourself. (That is, after all, the standard usage of the term.)
And if you refer to Solipsism that states everything outside the individual mind is unjustified, then to me, you're unjustified, and vice-versa. SO... Naturally, with everyone having that perspective, no one would exist.
But fortunately, not everyone has that perspective except a relatively few um... "people" who have nothing to do with their time and are logically challenged.
So I guess, by your argument, that your point is moot. Especially since I think it is and you don't exist, according to Solipsism.
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