Decent list. I actually though about a post like this for a while.
Here's my take:
Arguements for CLL (in order of importance):
1. May alleviate a mental obsession with one's perceived inadequate stature
2. For those under average height, it can bring them closer to, or in some cases above average.
3. May improve overall physical appearance, especially when wearing clothes
4. Possibly better luck with women and a more expansive dating pool
5. More self confidence
Arguments against (in order of importance):
1. Significant risk of some degree of life long pain and/or adverse biomechanical changes
2. Some lost athletic ability
3. Time to recover
4. Unnatural body proportions may negatively affect physical appearance
5. Benefit of additional height is mostly mental, and not tangible
6. Financial cost of spending a significant amount of money when you are young, which in turn can't be invested towards your future/retirement
7. Scarring
8. Will have to explain it at some point to certain people, which may cause embarrassment