No one can take perfect entries in the market and don't ever think that you understand bitcoin and it will keep going up from your point of purchase. If you are long term holder such dips should not be matter to you and if it matters then this means that you have invested what you can't afford to lose.
I don't see it your way, you do not have to feel uncomfortable about a market only when you invest the amount that you can't afford to lose. It partly depends on the kind of investor you are, there are aggressive and conservative investors, and no matter how affordable the amount the conservative investor commits to the market, they will always be in the defence of their asset and manage their portfolio properly. A little drop means too much pain for them, so they may actively be monitoring the market situation to divest at the slightest detection of a threat to their asset. I don't see fear there but smartness/proactiveness
If you felt that after your buying bitcoins the bitcoin dumps, it become more cheap then you could have DCA and accumulated more bitcoins if you have extra money. If not, just keep holding and do not panic sell in loss.
I like your advice about buying Bitcoin at a lower price and the DCA approach is a very good one to achieve this as well. But I am not so comfortable about blindly purchasing Bitcoin all the time like many are saying, I will only use the reality on my trading cart as a guide for my decision. I misguided myself due to many pieces of advice on Bitcointalk and abandoned my reliable investment plan, which I regret this year with the market situation.
The best is to act based on the prevailing market condition and not always blindly accumulate Bitcoin. What if unforeseen circumstances later happened, or have you been to the future to know what Bitcoin would do in the next 10 years?