It's an ethical debate. If you have no qualms about downloading pirate software, then by all means go ahead, just be prepared to pay the consequences if you're caught. "I used to own it, but my computer crashed" most likely wouldn't stand up in court unless you still had the receipt. Even then it's still a flimsy excuse.
To take it to the extreme, but still relative as far as the law is concerned, would be if I went to a chevrolet dealer and took a camaro. I used to own one until a (ex-) friend of mine drove it and blew up the engine and transmission because he hot-rodded around in it like a jackass. I lost my car indirectly for letting him borrow it while I was deployed to Bosnia, had no monetary way to replace it, and the "friend" had moved away by the time I got back.