There have been endless discussions on this, the only thing it coms to is the fact, that are you in it for the technology or do you have money invested. If you are a person using it for sending money to another place, and only buy it at the point of the use, then it doesn't matter. But if you happen to store it for long term, then obviously it matters as you will essentially be losing money on it.
Yes actually you have a point. The topic of the big deal on price of bitcoin is can discuss on the people who are affected on this topic. And the people who actually need to know the price/value of bitcoin is the one who do transaction and small time business in relate to bitcoin. Because through price they can know the possible earning and loss. Also the trader need to monitor the price of bitcoin especially on decision making where you will choose to sell or hold bitcoin to earn.
Yes, for traders the price is very important. This is the most important factor in his work. Although for investors, the price is important for ordinary holders, too.