My own problem with many worlds is (a) it seems to me to require a ridiculous amount of energy and (b) what happens when two world splits occur "at the same tim

My own problem with many worlds is (a) it seems to me to require a ridiculous amount of energy and (b) what happens when two world splits occur "at the same time" on opposite sides of our planet? Also (c), it just doesn't appeal to intuition, but it seems like much of physics does not :)