The legal system is run by people and the rules and decisions are carried by people, without people to run it or enforce its rules, then it just a useless thing. However, we live in a civilized nation with sentient and conscious people who operate such systems to make them run.
That said, being charged and convicted of rape is a very bad thing. Once convicted, the government labels you a love offender, you serve prison time and once you get out your reputation and record are ruined. You can run for office, you can't vote, can't be a doctor, fireman, cop, join the military, teacher, you are disqualified for receiving many services, your friends and family will hate probably hate you, and no one will want to hire you.