[JadeNB]

> It can never be illegal to use any tool. It is the intent and action carried out with the tool that decides whether it is illegal.

Since illegality is, literally, whatever is contrary to the law, anything at all can be illegal. We can hope that crazy things won't be illegal, and decry their illegality—but, since it's convenient for a government to impose sufficiently many laws that anyone can have some infraction pinned on him or her (https://www.youtube.com/watch?v=JwsLAqjqnxo), to say that any particular thing can't be illegal is probably wishful thinking.