So why hard forks are good for Bitcoin in the long run? In short, because they allow to get rid of rogue miners. Yesterday I read a letter signed by major cryptocurrency exchanges, and they declared that they would list Bitcoin forks (if such should emerge) as just any other altcoin out there. Basically, it means that any attempts to hard fork Bitcoin will massively and almost instantaneously backfire on those supporting them. People will naturally stick to the trusted version, and treacherous miners will be wasting their resources on mining a useless and worthless coin. In this way, they will necessarily leave the grand pool of genuine Bitcoin miners, and there will be more consensus between those who will remain in respect to future evolution of Bitcoin. Thus, those pools which support hard forks will voluntarily leave the scene and free space for other miners, likely more friendly toward gradual development of Bitcoin. That's why hard forks will come out as good for Bitcoin in the long haul
I do agree, it maybe good for bitcoin but it takes time. What about miners who proceed all those transaction? I don't get it, whether they will generate block for btc or btu or even both of it? Is that mean, bitcoin fees will increase as too many transaction per second but few miners since they parted.