Isn't pardoning someone who was given a punishment he/she didn't deserve not fair?

You are correct. You can be incorrectly or even falsely accused and spend many thousands of dollars to defend yourself. If you win you are still out of those thousands of dollars.
Lawyers LOVE that system. Lawyers get into politics and write the Laws they like. They don't care. For them it is a win-win situation. They get paid if you win and they get paid if you lose.

How many have you personally seen?

People who have gone to prison for a crime they did not commit generally are able to sue the government for false imprisonment and their payoff can come to millions of dollars.

One doesn't get pardoned for lack of evidence. One gets pardoned for mitigating circumstances.

PARDONS SHOULD BE ABOLISHED

When a governor or the president (the official) pardons a convict it is a slap in the face to the legal system.

A pardon is this in a nutshell: Ignore the finding of the court and release the prisoner. In other words, disregard the judiciary system that found a person guilty under the rules of the system.

I sympathize with you in that many people are wrongfully convicted.
I’m glad that I am not one of them.

But the immense power of the pardon is what allowed George W. Bush to release Scooter Libby, that f**king traitor who should have rotted in prison.

I would meet you half-way on this.

Rather than having the power of the pardon the official should have the power to force a re-trial and to allow for the re-examination and possible inclusion of evidence that may have been excluded in the original trial that found the defendant guilty. Of course, new evidence would also be allowable.

YES.