Of course, answers will vary, as we all come from different family and community cultures, with regard to co-sleeping and related practices.
For our family, actual co-sleeping fades from the repertoire just before puberty. Mattress at the foot of the bed is still an available tool for us during adolescence (for others, it probably depends a lot on how frequently it is used, and how you and your partner feel about its impact on adult time). We also use another intermediate strategy, which is sitting in the child's bedroom, next to or on the bed, keeping company. And I see no reason ever to end cuddles at bedtime, as long as mutually desirable.
