[watwut]

The addiction definition requires negative effect on you or closed ones. And inability to stop even when you rationally think you should stop. So, depending on how much tension and what kind of tension, it can be qualified as addiction or not.

> I know many men that have a very similar relationship with golf, but are they golf addicts?

Very time consuming hobbies do have higher rates of divorced participants. Regardless of whether they are popular enough for people to know about hobby related issues or not.

[makapuf]

Divorced persons may have more time by themselves so maybe they also engage in more time consuming hobbys.

[watwut]

Yes, the relationship goes both ways. Divorced people have more time and are more likely to join. People are more likely to divorce if they have such hobbies too - the implications for partner are very very real.