It by definition is a bad thing. I suspect you’re using the term as slang. Like, you enjoy working out, you do it regularly, and you don’t feel right when you’ve gone too long without a bit of exercise.

That’s not addiction, that’s a healthy habit. If you were truly addicted to working out, you’d be late for work because you wanted that last mile. Or miss your kids birthday party to hang out at the CrossFit gym. It would consume your time and attention to the detriment of other needs and the needs of others.

That’s the spirit the parent comment is using the term in. As something that demands more of your attention than it deserves.