A better comparison is, on a sliding scale, tsa or firefighters, emts. All can invade your privacy and take / destroy your things to a varying degree. You don't get to chose which fire gets you out of your car or which EMT does cpr on you.
You do get to choose not to use TSA though. It might be inconvenient or expensive but that doesn't mean the choice doesn't exist.
You do get to choose not to use TSA though. It might be inconvenient or expensive but that doesn't mean the choice doesn't exist.