Does ANYONE have a valid definition of “addiction”?

[Missuslovett]

No you can be addicted to base jumping or jay walking - You dont have to be dependent on something to be addicted and you dont have to be addicted to be dependent

For sure. You can be dependant on dialysis but not addicted to it. I have many patterns of behaviour (that aren't always 'good') but I'm not dependant on them. This is the problem with defining what addiction actually means, especially as it's often misused, sometimes intentionally, by folk who like to use the gloss of its negative connotations to peddle their own agendas. Inaccurately.