If you perform classical music, what's the point of the conductor?

Most musoes of this sort can only play what's written in front of them. So, if you're busy reading the sheet music and concentrating on playing it the right way, how can you possibly take the time to look at the guy waving a stick? And why does he only have one stick instead of one in each hand? The other hand gets as much action as the one with the stick.
If he wasn't there, could you still play the music successfully?
The band I was in never used sheet music. We just knew our parts and played flawlessly. The only stick waving was if Bob decided to whip out his Nun chucks during an instrumental break and go through a routine or two until it was time for him to sing again.

If you perform classical music, what's the point of the conductor?
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