• asymmetry, in general

• bumps

• a bifid (BEYE-fid) tip (where there is a notch between the two tip cartilages, sometimes horribly referred to as "buttnose")

• dents

• scar tissue build up (very difficult task)

• hooked

• "piggish"

• pointy

• bulbous

• not angled enough

• angled too much

• too obvious "done"

• not "done" enough

• difference of opinion/preference

• career advancement (borderline)

non-typical, irrational or unhealthy thinking:

• wanting more 'dates' or to attract a mate

• gain popularity

• Body Dysmorphic Disorder (BDD) or other self image disorders

• low self esteem due to emotional issues without apparent reason

• weight problems

• eating disorders

• deficient chin/mentum

• deficient jaw/mandible

• weak or prominent maxilla (upper jaw)

• for someone else

• career advancement (borderline)

Of course we will probably not see eye to eye if the above is true regarding the "wrong" reasons - but I thought I should mention it should it be a possibility. Just be sure that you are doing it for yourself and not to try and trick yourself into thinking that you want it for the "right" reasons rather than the "wrong" ones - it will save you MUCH grief in the future. Not to mention thousands upon thousands of dollars and worst case scenarios.