The reinvestment allowed me to hash today 21x faster than 1 year ago and to earn ~1/3 of my initial investment this month.
The 'Reinvest At Any Cost' strategy looses to the long tail of diminishing returns and languishing bitcoin prices.
So far mining strategy was more successful for me than buy and hold (BTC) strategy-seriously. I refuse to frequently trade BTC because for me fast trading never works.