It's a pointless, unproductive waste of time, and the fact that people get jollies out of deliberately aggravating other people bespeaks of a certain level of sociopathy.
Feeling pleasure from the misfortune of others is common in humour. Being the dominant, accepted form of humour in most societies, it's the opposite of sociopathy.
It's unfortunate that there are no video services that allow people to do the same. I suppose you could vidcap your purchases and burn those, but you shouldn't have to do that.