Satoshi made one post about the re-use of bitcoin addresses and everyone takes it to the extreme.

Please explain why someone should not re-use an address.

I'll save you the effort, because there are no valid technical reasons.  There are "privacy reasons" (bearing in mind that bitcoin was never intended to be, or portrayed as, an anonymous payment method) why re-use may be considered less than ideal, but I'm tired of seeing people say you should not do it like it's a plague or something.