Being charged with a crime isn't something that anyone aspires to do. We know that mistakes happen that sometimes lead to criminal charges. No matter what crime a person is being charged with, the effects of a conviction can be life altering. Time in jail might jeopardize a job. Fines can harm a person's financial status. When you think about that, plus the possibility of a ruined reputation and other social consequences, it is easy for you to realize that a firm defense is necessary in these cases.
In the best cases, some defendants might be able to have charges dismissed. That means that they won't face any legal consequences of the charges. Ultimately, that is the goal of almost every criminal defense case.