I never understood the argument about tiny fees to send money, Bitcoin is too volitile! I can send you £400 of bitcoin today tomorrow it'll be worth £340. Your profit margin gone.
Its volitile in exchange rate currently, but if you are using it not as a way to send pounds but as an ACTUAL currency which is what its intended for ultimately than that wouldnt be an issue, also over time as it gains support it will naturally become less volitile anyway, at the moment every still knows that it could end up worthless or end up worth a fortune, so depending on peoples mood it swings all over the place.
Also the total "market capitalisation" is currently only about 800 dollars * 10 million coins = 8 billion dollars, thats naff all in the grand scheme of things, so someone buying a few million dollars worth has quite a marked effect on value, especially given the number of people committed to "hold" which means that the number of traded coins is only a tiny subset of that and hence a few million dollars worth is a huge percentage.
If its capitalisation reaches into the hundreds of billions or even trillions which is what is ultimately needed if its a proper currency then the price will have a lot more inertia and not be moved by just a few million dollars of trades anymore.
And finally of course, as its currently NOT used as money, just as a speculative vehicle for investment, thats why when it moves slightly it triggers so many other people to buy and sell it and hence move the price even more.
So what its doing now, is not indicative of what it will do in the future if adopted.