There is nothing wrong with a fork. Let's just make sure the exchanges allow the exchange of both. If there are exchanges that intentionally block one over the other, the exchange is not a supporter of free markets.
The only problem is that CURRENTLY, real world merchants like Dish, Expedia, etc will only accept "Bitcoin". They will not bother accepting two coins, so most likely the fork with less mining power will die quickly and there will be miniscule demand for it.
In the future if crypto becomes more mainstream, a fork that leaves two currencies will be more viable.
Dude, no one is using Bitcoin to pay for his Dish bill. That type of use case is never going to make a difference... get some sense, won't you?