All things, at all times, are connected in some fashion.

This is why it is never really the case that a positive answer can be accorded to the question, "what does it matter, it's only hurting me?", or "what does it matter to you, it's my business?"

Now, nonetheless, the degree to which something is "only hurting" the actor, or "my business" does indeed vary according to the impact.  Somethings my be harmful, but the greater harm would be in seeking to address them, or perhaps seeking to prevent them by overreach.  

But, it's also the case that some thing that may seem deeply personal to the actor, or "only the business" of the class doing the act, may have deep harmful impacts far beyond the person undertaking the act or asking the question.  Small leeway may lead to enormous erosion.  Large leeway may have little erosive impact at all.