> One vote doesn't matter
C'mon, we can think deeper than that. One soldier doesn't matter; are militaries useless? One software developer can't do much on a sizeable project; should we abandon all software? All open source? One journalist, one HN comment, etc. etc. When can one person accomplish much by themselves?
You're right, one person alone doesn't accomplish much, yet somehow humanity has accomplished incredible things. We are social creatures, we naturally work together to build and do amazing things. Please join us! The sky is the limit, and not even that since 1961.