This worries me about BTC, because it may get to the point where for the drop in difficulty takes too long that it will no longer be profitable, in this case cr

This worries me about BTC, because it may get to the point where for the drop in difficulty takes too long that it will no longer be profitable, in this case crypto currencies where the reward is higher and the increase in reward vs difficult increases makes it more profitable means more miners will ditch BTC and go to those... That means transaction verification times just keep raising and then BTC eventually becomes useless. That's my understanding anyway...