Depending on the circumstances of their illness mate, some people may need to be on them for a long time / for the rest of their life.
One of the biggest problems that health care professionals have with treating mental health is that literally no two cases are identical,
Sometimes there’s a “ starting point “ - work, relationship, something’s happened etc, other times it can just happen for no apparent reason,
With some people it can come and go for no apparent reason - “ the Black Dog “ as Churchill called it.
There’s so many misconceptions and myths surrounding anti depressants too, which doesn’t help either.
The biggest one being that they’re habit forming - they’re not.
People may have to keep taking them to help them remain “ normal “,
but that’s not the same as a dependency, it’s due to their illness that hasn’t gone away.
As you can see, it’s really complex, hence why it can be so hard to treat !