Earlier quoted context omitted.
By pirating, you mean running modified binaries from unknown sources? Morals aside, how is that safe, secure, or even convenient?
I've been doing it all my life. I've literally never paid for a software license, I don't know any better. In general, I usually download from reputable sources. Haven't had any problems so far.
That you know of. For all you know you could be infected and part of a botnet. Viruses don't open a big popup saying "haha you've been hacked!".
This line of thinking is extremely common and absolutely nonsensical. The point of a virus is to remain undetected.