Ah, depends what you consider stache because my faint shadow of hairs came in 4-5 and I believe it started just getting noticeable at 3. Im not really all that interested in much facial hair in the mustache area anyways so thats enough for me.
If its taking awhile maybe its because one isnt genetically predisposed to mustachehairs or lots of facial hair, Im sure hoping thats the case for me at least. Judging by my brother who is only two years younger than I he has a really cool chin scruff of hair and not much mustache hair so Im fine with that.