These dips are good for two reasons
It allows people who haven't invested yet to invest
It brings awareness to the market, growing the potential investors
I agree with if you look it in a positive way, you can make a profit out of it, this is the best time to buy when there is a dip especially if the coin is good and had a good roadmap ahead, I always look for a dip in a good coin, it's like investing in their ico stage.