Not at all. At the same time, I acknowledge the fact I am not in the position to stop it. People, in general, do whatever the fuck they want, and often not even laws prevent then from doing it.
Now, if we're in the business of talking about it, virtual coin mining falls pretty low in the leaderboard of stuff I'd rather not see happening. Much higher are (in no particular order) wars, famine, dumb people, pollution in general, with over-usage of other natural resources such as oil being higher, as well, in that particular category.
Also, I must point out that "value" (or lack thereof) is subjective. For example, I value my wife above everything else, which is not true for 99.9999999875% of the world's population.
If you want to stand by your nickname, at least make an effort to prove it. So far, you're doing an excellent job tarnishing it.