On the one side, "illegal" Amiga sites are good ! Why ? Well take this for example : Someone got an old A500 and really got no monitor or TV to connect with and even don´t have more knowledge then putting some disks in and play ! This guy now can "legally" optain a copy of a Kick Rom image to use an Emu (of course only the Kick he´s got in his real Amiga
) ...
On the other hand are those sites really bad, because some people think everything older than a year can automatically be posted as kind of "freeware" .... There are not many people or companies out there to support the classic Amiga platform anymore, but I think those who are left need support !
Just my 2cents