You are absolutely right. But such people will always find a lot of reasons to complain. Today this is a small exchange rate, and tomorrow they will complain about why there are cryptocurrencies everywhere.
It seems to me that we are in a flat zone of the market now. BTC price is around 6,700$ and Ether is around 270-300$. So Im waiting for bullish arrival on the market.
Young enthusiasts of cryptocurrencies should analyze prices not for 6-7 months, but for 3-4 years. In 2013-2014, the price of BTC was more volatile than now. He fell 10 times from the maximum price, but still grew slowly.
If you trade you will always have a risk to lose. Only those who do nothing dont make mistakes. In a view to dont lose a lot you have to study everyday and dont risk too much.
Current situation looks like overall stagnation in 2014-2015 after huge rise of bitcoin in 2013. This period took about 2 years and we had only half a year, so in the near future, probably, there are no such brilliant prospects.
Id recommend to buy Ether. There will be important update in few months in its network, after it there will be significantly less coins mined every day. Thats why the price will go up.