DeLoreanDude wrote:
You stop growing when you become 18.
that's a bit of an oversimplification and not completely correct. your growth will usually stop at the end of puberty, which is generally somewhere between 17 and 20. facial hair starts to develop near the end of puberty but continues to develop beyond puberty. i've seen guys able to grow a beard at the age of 13 or 14 but aren't anywhere near done growing. i also know some guys who don't need to shave, or only shave once a month (my two male roommates only shave once a month), so development of facial hair isn't indicative of the termination of the growth process.
also, people will shave according to very subjective standards. some guys like longer stubble so they'll shave less frequently, some want no stubble so they shave more frequently. the fact that you're shaving daily doesn't have anything to do with your growth.