I’ve been thinking about it for a while and the best definition I could come up with is that an addiction is a hobby that’s seen by someone else as a waste of time, and so calls it an addiction. — khaled

I think it's a matter of degree in that an addiction is much more stronger than a hobby. A person with a hobby is drawn to an activity, while a person with an addiction is glued to it.

it just seems like a difference in intensity then. My point is though, if someone plays the guitar all day vs plays video games all day one is called an addiction and one is called a hobby. Even though both are just as gluing. It seems to me that what an addiction is depends on who’s saying the word

One person’s porn or heroin addiction is another person’s hobby.