of course the price matters. it matters for 90% of the people who bought their coins. if the price is stable more people are willing to convert their savings into bitcoin. which isn't the case right now.
True the price of bitcoins matters in the market because its value dictates the amount of people and investors that would actually go with bitcoins. Bitcoin would increase in price whenever the demand exceeds the supply and this is because more people wants to have bitcoins due to its very high price. The prices of bitcoin also matter when to buy or sell bitcoins.