This kind of stuff really makes no difference to me. I never, ever pirate games. Why would you? There's plenty of media out there now to make an informed decision before purchasing; YouTube, hundreds of reputable review sites, Twitch, forums. It's not like the old days where you had a two page spread in a magazine (if you bought it) and the back of the box to go on.
If you can't use the internet to gather all the information you need and "need to play the game and then buy it" then you're seriously doing something wrong. If you just don't want to pay for stuff then you're a thief and should be treated as such.
I'm not the biggest fan of capitalism and I'd argue that most games are overpriced these days, especially when you factor in DLC's, but the long and short is that the market is what it is. You pay if you want it on release or you wait for a sale. You can't get away with stealing a car from a showroom in the first week of sale and then paying later when the price has halved so why should you do it with games?