I tend to agree, although past history doesn't guarantee future performance--in this case in regards to difficulty increases.  I don't overclock my machines so I can sell them into the used ASIC market without feeling like a dick, but I also don't underclock them to prolong their lifespans.

Many people here will run under spec to gain higher power efficiency to offset electricity costs.  I prefer to run them in a less efficient manner to acquire more coins at a higher fiat cost.  I do this because if the coins jump in price by a factor of five or ten, the extra electricity I paid for them will be a nominal consideration.  I'm basically buying BTC via the exchange that is my local power company, but to each his own!

Cheers.