Magically grow hair each night. Sell to wig-makers. Profit. ..Though, maybe he's gotta eat a lot more to actually grow, what, half-a-kilo of hair? each night. So maybe not that much profit =P
I am guessing he is cutting his hear in order to differentiate him self from his mother (who usually has long hair ) more .
In a form of miner rebellion as well as doing it in order exercising some form of control over his own look - appearance in the proces trying to establish his own sovereignty in what ewer ways are available to him , understandable .
Alto his initial reasons might be somewhat questionable , the end result of him both exercising his own sovereignty as well as having what seems to be a rutine is somewhat healthy for him all things considered .
Everyone is taking note he cuts his hair, but let me say…..he’s holding the scissors wrong. He has it upside down with how he wants to cut. And Also, he’s the son of discord, his hair probably grows due to the chaos magic