Arguments against the feasibility of ancestor simulations

One objection to the simulation argument is that creating ancestor simulations that are indistinguishable from reality may be impossible or extremely difficult due to the computing power and complexity required. The idea of simulating the entire universe, including all particles and quantum events, raises questions about the feasibility and accuracy of such simulations. Additionally, the moral implications of creating conscious beings solely for the purpose of a simulation are also raised as a concern.