Morally? 100% fine. You will still be breaking the law and exposing yourself to risk of prosecution, even if the risk is very low.
I buy a lot of games, I have well over 300 games on my Steam library and over 40 games through GOG.com, as well as the Humble Bundle stuff.
That being said if I am on the fence about something and there is no demo... well I won't admit to piracy as that is probably against the TOS but I wouldn't see anything wrong with it at all. Provided you end up actually buying the game if you enjoy it.
I buy a lot of games, I have well over 300 games on my Steam library and over 40 games through GOG.com, as well as the Humble Bundle stuff.
That being said if I am on the fence about something and there is no demo... well I won't admit to piracy as that is probably against the TOS but I wouldn't see anything wrong with it at all. Provided you end up actually buying the game if you enjoy it.