Well seeing how we are all granted with one single life, maybe we should be more upset at things that take away our valuable time and replace it with things that make us angry? Who's to say that these things aren't worse than heroin? Lots of people would argue otherwise, I'm becoming one of them myself. Heroin only impacts one individual, social media impacts every connected person on the planet.
Mass misery is still misery.
We should, but we also shouldn't decide what other people consider proper use of their time
> Heroin only impacts one individual
I have to disagree with this. Having talked to heroin addicts in the past, I was told that the heroin addiction destroyed their relationship with their families and their friends, causing heart-break in the process (particularly for mothers). They use everyone around them so that they could get their next fix: borrowing, constant cajoling and stealing results in alienating them from everyone in their social circle – other than fellow junkies.
When cut off from family and friends, junkies resort to begging, stealing, street prostitution, shop-lifting and other petty crimes, all of which have a negative effect on their community. Some junkies end up committing violent crimes which has a more destructive effect on society. They often end up in debt to their dealers and commit other crimes at their behest.
All these things are much worse when the junkie is a parent or has others depending on them for a safe and secure family life.
Also, in my country (Ireland), heroin junkies also place a huge burden on the health service. Their chaotic lives result in multiple health issues and they take up a significant portion of hospital beds.