Well interesting thread that goes directly against the OP's statement.
OP scored a 166 and did not make it as a lawyer.
I scored under a 165 and am licensed in two jurisdictions and have won many trials and make a living as a lawyer as do most attorneys that did not finish in the top 10% of LSAT takers.
The LSAT is the first baby-step in the process and once your in a law school it does not matter. As OP has proven a variety of factors arise during law school and no matter what your score you might quit to become a musician, or any other situation could arise.
In short, plenty of people become practicing attorneys without scoring a 165 or higher. There are also many people that score above a 165 and don't make it.
Certainly having a 4.0 and 180 LSAT is ideal, but it is not a guarantee of success.