I depend on what you are doing with bitcoin. If you're investing in it, then yes. Because you need to maximize the price of bitcoin to get a profit in investing in it. However, if you are just exchanging bitcoins and buying stuff after, then you don't need to mind the price.
You don't need to worry about the price if you are exchanging fiat to bitcoin in order to buy something but if you are exchanging bitcoins to fiat in order to buy something then price is everything that matters, because if the price is low you will get a lower exchange offer which would not be liked by anyone.
bitcoin matter in both condition either you are gong to buy or sell, bitcoin depend on its price, people entering in the field of bitcoin and they are investing their money in bitcoin as they think that the price is expecting to increase in next few months. if the price is dropping then no one is attracting toward bitcoin and will never like to invest their assets here, therefore to me the price of bitcoin really matter.