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.
what you said is totally perfect, If I answer you no then I'll be lying. Even though my hope is for us to see 1 btc equivalent to 1 btc some day with the price of fiat mean nothing to us, the current movement of the price still gives us the indication in how well accepted btc is and its demand. I do agree with your reasoning but until the I will still closely follow the btc price movement.