2 Answers

It can be treated, if the person admits there is something wrong. It never really goes away though. They get worse with stress and they do a lot more things than just count. It tends to run in families. The person having the problem doesn't see it as a problem. To them it's natural, but it is a problem for those who live with them. For them it is very stressful.

It is a drive, based on irrational anxiety. (So is Love for that matter)  Like any other 'way' of being a human being, OCD confers partial benefits as well as deficits. Only when it interferes with your daily living is it a 'problem' to be 'cured'. Extreme OCD can be debilitating on the person who is compelled to rituals, but in a mild form it often confers a cautious outlook that seeks out problems, even if the solving may be difficult for that person but within the purview of another skillled person. With a mild condition it may well dispose a person well to detailed, exact, accurate work.