The Schwarzschild radius of a black hole with the mass of the visible universe (estimated) is larger than the visible universe. So we may be inside a black hole. If we assume so, then black holes are very agreeable places to live, with a flat spacetime brought about by a massive, relativistic, hollow, and spherical event horizon. It is the outside of a black hole that is rather unpleasant. Also, it would make any matter bound on both sides by event horizons. The event horizon of the parent universe would prevent matter and energy from escaping, while the event horizon of the daughter universe would grow and eventually intercept all the lose-flying bits of matter and energy that previously eluded it by skirting around the inner perimeter of the parent. Like being trapped in a cage with a hungry beast. I also made the suggestion in my "list" of questions that the geometric size of the universe may exactly equal the Schwarzschild radius, while the observed or "apparent" size, as astronomers like to say, is governed by lightspeed delays and relativistic effects. The accelerating expansion that we observe may simply be that: the observables catching up to the actuals. So this would not necessarily invalidate my black hole inflation model.