"Five are the acts quite akin to fitrah:Circumcision, clipping or shaving the pubes, cutting the nails, plucking or shaving the hair under the armpits and clipping (or shaving) the moustache." (Reported in Bukhari & Muslim)
Allah ordered Prophet Muhammad to follow the religion of Ibrahim. When Allah says:
"Then We inspired you: 'Follow the religion of Ibrahim, the upright in Faith'."
(Qur'an 16:123)
i guess all muslims do have their foreskin/nails cut.... but regarding armpit hair and moustache... it is a moot area!!!!
you also infer facts to your convenience... wherever it seems illogical, you easily say that it is optional...?
