Porn is free speech. Countries make porn illegal and censor access to it, people use Tor to get around the censorship and obtain porn. That is free speech, that is keeping big brother in the dark and that is combating censorship. Of course Tor is also used for tons of other things. People use Tor to get around websites with geographic locks that block people from certain countries. Journalists are more and more starting to suggest their sources contact them via Tor to ensure confidentiality. A substantial number of Tor users are merely libertarian minded people who want to protect their privacy, even if they have nothing in particular to hide. As previously mentioned, a lot of people use Tor to surf adult porn in places where it is blocked and/or illegal. Law enforcement and intelligence agencies use Tor for open source intelligence gathering and in undercover operations. A lot of people interested in technology dabble with Tor to various degrees. hell I am pretty much just retyping this more comprehensive (and yet still partial) list of reasons why people use Tor: https://www.torproject.org/about/torusers.html.en If you consider yourself libertarian you should really use Tor for all of your non-sensitive (ie: bad if intercepted or prone to get you locked out if Tor exit is used) surfing, the more people who use Tor the better anonymity it offers to all of its users.