I think that Bitcoin is quite difficult to be used as a means of payment because the transaction fees are too high so that it will be detrimental to its users. In general, people use bitcoin as trading and investment in order to get huge profits. The bitcoin transaction fee should have been reduced so that I can use bitcoin as a means of payment in various online shops that accept bitcoin payments.
Transaction fees are a transient phenomenon. You will find better conditions to transact in future. That does not determine the future and neither does it indicate a long term trend.
The fact that Bitcoin is used to make profit off the market movements is a side effect of the situation and not the main thing. True that Bitcoin being accepted by merchants is lower than that needed for a overall high use. There is a gradual rise but we should try to gather more Bitcoins in the meantime.