Yes, it depends on you goal, I will speculate that most of us here has the HODeL mentality, so yes, buy low and then let it sit in your wallet for the next year or two.

I can't say that though for day trader or those who love to short Bitcoin, could be effective for then to buy at the dip and sell when they have like 5%-10% profit, then rise and repeat. So there's no right or wrong approach, it all depend on your goal and how everything fits your trading activity.