Isis you received the answer to that question in a previous thread, and as I told you then love spells are here on this site and in books because some people do cast them. How you cast and what spells you cast are up to the practitioner. Thus, some use such spells and some don't, hence, why there are here on the site and in books.
Individuals that don't believe in using them or that know their consequences will say not to cast such spells, but individuals are free to choose if they do or don't cast such spells. This of course is again why the spells are here and in books. Casting spells are up to the individual. Authors of books and the site admin feel that, that choice is up to the individual and therefore have the spells so that members can decide on their own whether or not they use them.
The spells on this site were posted by individuals that have used them and see no issue with them, however, other members might disagree with their use. Those spells are there for anyone that wishes to use them. That is why they are there. Do you understand now?