Love shouldn't be the all overarching shadow for anything. Respect, support, acceptance and patience are important. Whether there is love involved or not doesn't matter that much. Rejection is bad. But there is a limit to everything. Imagine you were a wife to a guy who is extremely addicted and loses even the house because of gambling. How much is love worth then if you are a mother of three and your husband just put your house on the table in a casino? At some point hard action is required and sometimes that is even the most helpful measure for the addicted themselves. It helps them facing reality and getting their mind straight, or not... With the end result possibly being anything from recovery to death.
I agree with this, it is true that the support of the family is critical for a person that is addicted to anything to get out of it, however there are limits, we must remember that when there is an addiction the chances of domestic violence go through the roof, so there is a very high chance that the relationship is going to turn up abusive at some point and people have to think about their own well-being and the well-being of everyone else in the family, and a hard choice has to be made even if they do not want to take it.