The most comon reason someone loses their case when fighting a ticket is admitting guilt. Cops pull you over doing 70 in a 55mph zone, then tells you he's gonna give you a break by writing you up for 69mph, which is a much lesser offense.

Then this happens:

"Your Honor, I never drive over 65."

"Well, son, how fast were you going?"

"56, maybe 57..."

"Guilty. Pay the fine, son."

In Pennsylvania, points are everything when it comes to insurance. You got lucky that the cop just wanted money and didn't care to fuck with your insurance rates. I used to live in Jersey and insurance rates are so fucking out of control that lots of people pay to fix their own cars after accidents.