Many people do not want to RP the merchant/miner. Due to the fact that they need money, they are forced to make one. their heart will never be into it, and they will never really be able to RP him. Either that, or the Boredom stuplifies them. When someone forced into a tedious task that they never wanted to do or RP as in the first place, they will react VIOLENTLY, to any increase in the amount of time required.