Not all users of the tor browser are bad guys, there are some very legit reasons to be using tor
(foreign journalists use it, you may use it when you do not want your insurance know about your searches
that will set your hospital bills unreasonably high).
To-day the mere reason that people use tor makes them suspect of doing something bad. To-day often one is guilty until one has proven oneself to be innocent. Strange Napoleontic interpretation of the law where one was innocent until proven guilty (tax laws exempt).
Funny is that it is always the not so bright tor-user that comes caught. The ones that do not follow the no javascript enable rule, that will use extensions to better set them out through their browser fingerprint. So the not so bright baddies are caught and rigthfully so.
You always should use tor within the frameworks of the law. I do not use it, but if I used it only as a law-abiding citizen and for legit reasons.
But I can imagine situations where people want some extra anonimity with tor.
polonus