[marcell]

I don't need a reason to do it or not, it is legal under the law.

Tornado Cash has legal uses under the law (like the one I described above), because it can be used to conceal the origins of legally obtained money.

See the legal definition of money laundering here: https://www.law.cornell.edu/uscode/text/18/1956 , it specifically calls out "unlawful activity".

[nl]

There was plenty of unlawful activity done using Tornado cash.

For example the money stolen in the Axie Infinity hack was lauded through Tornado Cash.