If the records were easier to get hold of then there would be no point in buying the bootleg. However, it's put out in very limited numbers and is highly sort after and thus the value of the records reach a premium. Great for collectors, and the annoying gits that buy up shops full of stock so they can sell it on at a profit later, but not so good the people who live for the music and just want to have the records.
I have some bootlegs and I don't feel guilty about it, because I would have bought the original if I could get hold of it at a proper price and would even probably still buy the original if it became available. Another way of looking at it is that the bootlegs are doing people a service by making the tracks available to more people, especially if they're not making much money doing it.
