Selling Calls

[Nevadaref]

There is nothing wrong with exhibiting confidence and strength with mechanics when making a call, but I don't believe in the need to "sell" any decision.
Why not?
1. No one is buying anyway. The supporters, players, and coaching staff of the team that the decision goes against isn't going to be happy about it no matter what antics are displayed when presenting the call.
2. Officials don't change calls anyway. Whatever was decided is what the call is, barring video replay which is now becoming used with more frequency. Recently, I've found it rather amusing to watch pro baseball or college football on TV and observe an official emphatically making a call, which video replay shows to be incorrect! So what purpose did the hard "sell" serve? It didn't make the official correct.