Who cares if your not ready for mk11? You realize most of us are Mortal Kombat fans and could care less about injustice.
Regardless whether you cared for Injustice or not, it was very successful and many people, including myself, enjoyed it a lot. And you can't expect NRS to just keep pushing one MK game after the other. Studios work on multiple IP's you know and working on the next MK game, when MKX is barely a year old is insane. Not just that, but the game just got a huge update a couple months ago, so announcing a new game already is pretty much out of the question. Injustice was very successful and with the surge of DC Cinematic movies starting with this year, there is no way WB and NRS won't capitalize on that, especially since the Injustice franchise has proven itself already.
So being salty over the prospective of another Injustice game being made instead of MK11 and actually saying that you hope it doesn't happen because that would be what suits your interest the most, is not only selfish, but also quite illogical and naive considering that NRS has another successful IP, that's very relevant right now.