As you said history repeats itself. Miners are also mining the coins i.e. BTC and BCH depending upon what is profitable to mine, switching between the two blockchains. Especially BCH which is more subject to more volatility. I see people moving their profits to Litecoin as the alternative. This also has lead LTC to reach all time highs presently. I wont buy BTC any time soon as i am anticipating a price drop in October, ahead of the November hard fork.
RE: Why I won't buy a bitcoin right now