It is theft. People that promote the absurd "it's sharing" and the "try before you buy" arguments really need to get a grip. The concept of "sharing" is different on the internet. Software, Movies, e-Books, etc all take time and effort to produce and it is only fair to pay to consume this content.
Morally it is wrong. If you pirate content however you need to stop justifying it with illogical arguments. Just admit that you do it because you can. You are either too lazy to buy it or you unfortunately live in a country where you cannot obtain it legally.
If you're going to break the law, don't delude yourself into thinking that you are on the moral high ground. I have respect for a pirate that doesn't hide behind some stupid argument to justify his actions. It's wrong but fuck it, who cares! :P