So becuase you have bought some then you feel you are entitled to all, even though you may not have contributed anything to the people whi's work you are using? Rather selfish really.
A lot of publishers will replace the media for you, so this is not an excuse.
But by taking a copy without paying for it you are saying exactly that! If you can't afford something then either find an alternative or save up for it! Everything in life has a cost associated with it, maybe it is about time you started paying for your costs too. I can't afford some of the items in life that I would like to own too but I dn't just take them and then decide not to pay for them. Just because someone else removed the barrier to obtaining this it made it ok? So if someone looted a store and offered you the items at a knock down price would you think that acceptable too? (I suspect you would).
Excellent - at last you aren't ripping anyone off I hope! Shame it isn't becuase you have improved your morals!