[meaty]

Why the hell would you invest in something so risky then?

I refuse to pay for anything which can be taken away at the whim, process or incompetence of another.

[lmm]

Because it gives me the best odds. Store-bought: can lose or break the disc, sometimes the DRM won't let it install on my system. Pirate: might be missing some of the data, might be invalidated by an update, always that slight fear of viruses.