People always said that buying is better than mining (and they have been right almost all of the time), but where's the fun in just buying?
When you're an ex-miner, recognize how unprofitable and a pain in the balls it is to run a mining operation, end up doing the math on a miner + electricity + Time to ROI... fuck the fun.
Time is money. Cheaper to buy what you would spend on a miner now, than what it would likely generate 18 months from now, IMO.
Unless you have cheap or free electricity, I don't see the benefit of mining right now vs just buying corn outright.