It was a huge mistake to download a majority of the stuff I want to buy. I may not like digital copies but why buy something when you already have it. Ya know?
That is up to your interpretation and motivations IMO. Like, why are you buying it? To support the artist, get the music, get a higher quality, to have a collection, etc... And what does buying mean to you? As well as how you feel about downloading if you can or want to buy.