Different opinion? I bet no reasonable opinion can be contrary to the DCA investment approach, the only suggestion here will be another investment approach and not the condemnation of the DCA approach as the approach is not the only way out in investment. Aside from this, DCA is a very good investment approach that fits in for the poor, average and the rich, it helps you average both your risk and earning possibilities. Mind you, with this approach, you should know that you would rather be conservative, so the aggressive investors or the most lucky ones might gain more than you, but still, you will average the pains of the bad market behaviours and also average the benefits of the good market behaviours which make the DCA approach unique because either way, you will never miss out.