That is after all how any decision is made

It is indeed how any decision is made. As I said at the outset, there is a distinct possibility or even a probability that things will go that way. But that is not a certainty. Your assertion that Had Great Britain remained neutral and had stayed out of the war in 1914 the following would have been the case is therefore invalid. You could have said 'may have been the case', 'possibly would have been the case' or even 'probably have been the case'. But you didn't. You said it would have been the case. Neither you nor anyone else can be certain of that. You know that, which is why, I suspect, you are now relying in poorly aimed abuse rather than reason.