Re: How long to hack an address that is used to send BTC multiple times?
But sometimes you do not need privacy (e.g. paying your phone bill).
Privacy is always important. Even if you are paying your phone bill. I shouldn't need to announce to the world the total value of bitcoins I have just because you want to pay your phone bill.
What? Why would you pay your phone bill from your cold wallet?
But alright. I get your point.
Perhaps we could leave it at that: a user could re-use addresses for situations where traceability is explicitly desired - but generally it should not be done.
I really wish someone like you would have told me all that shit when I was a newbie :-)