People, who aren't as hardcore as those of us who post on dedicated message boards, might like using guides to help them as they are not such avid gamers. Some games can be truly difficult in places to understand and learn how to proceed to the next area. There are also a bunch of sidequests, items, and other such things that can be very difficult to find if you're not super hardcore.
Cheats work in a similar manner. For some, they add a more fun twist to games and for others, they can help unlock certain things that would otherwise be too difficult for one to obtain in a reasonable fashion.
I understand your dislike for such things, but if you actually try putting yourself in the shoes of someone who likes them, and try to imagine why they might like them, is it really so hard?
