This is always a difficult subject to broach. Opinions are so polarized as to border on the religious. To preserve my place in geek heaven, I will suggest only the follow thought:

If software was too complex to pirate, developers would either have to buy it, or write their own version of it to experiment with it. Perhaps they'd use a demo version beyond its expiry, but if this was too complex to crack, they'd have to write their own.

Now consider this.

If developers wrote their own, they'd write an Open Source version of it, causing the aformementioned software to be purchased less often, and perhaps only by commercial entities. And if a layperson were to ask for help, they'd generally seek it from knowledgable geek (such as a developer) and in return would be told - "don't buy it, I can't help you with any problems you might have, since it's closed and non-copyable... but use this Open Source equivalent instead" Now how many sales have they lost?

I'm not condoning or endorsing the above view. I just said it...

That is all.