I mostly play games on my PC. I buy games, but before I buy a game I crack it to see if I would play it because I don't want to give my money, get past 2h playing it and I can't refund it. I don't do risky stuff other than that..
You do realize, this is possibly the most 'risky' thing you can do, right? Cracks, cracked games, keygens, all of it is almost always compromised.
Also, there is little excuse for piracy when virtually everything has a refund policy now ranging from 2 full hours of gameplay to 30 days of use. Even Amazon Kindle Books have a 7 day refund policy for readers!
First of all if I know that they are from 'reliable source'. I can be sure that they are safe and I would allow them for my AV.
No they aren't. You might think they are, but they aren't. For example Cracks.am was a VERY popular crack site for many many years (years ago), and was considered reputable. However many people don't know it was operated by the CIA and everything on the site was backdoored. The CIA unit responsible realized they had significant numbers of foreign IP's visiting cracksites, and utilized these to conduct operations. Which I argue, still takes place today on various sites.
Personally, I think anyone is insane using cracks, cracked games and/or keygens because I've seen how many are backdoored. Whitelisting those guarantees your system is compromised IMO.