Why don't people/Judges use the 10-10 round very often?

[Mikkel_K]

I know people give Teddy Atlas shit for scoring lots of rounds even (I can't say, I havn't watched any fights where he is guest judging) but I scored a couple rounds even in the Pac JMM fight just because it was so hard to differentiate and it was back and forth action.
Lots of people were arguing here about the first round and everyone admitted it was hard to score so why not a 10-10 round? Is it because judges are encouraged to find a clear cut winner of a round to help with scoring a fight?

I've always thought that judges are encouraged to never score a round even because this way of scoring helps motivate the fighters to actually win the round. In a close round the system - the fact that the outcome of a round will make a 2-point difference in the end - should really encourage fighters to press the action towards the end.

So, in other words - it works like this, not because it is 'fair', but because it - theoretically - leads to better fights.

Do I make any sense?