Speeding is not a matter of tickets, or going faster than what is posted on the sign. It's about safety. My thought about speeding have definitely changed. I learned that people will always go to what they feel is safe and use their own judgment. It's a matter of opinion and it can never be wrong, just different.
People have different limits behind the wheel and that's just how it is.
We can always dream about everybody driving perfectly the same and not debate, but this is reality.