My Mom like many other cherry-picking believers, thinks heaven is in another dimension or plain of existence since it's clearly not in the sky or in space. I ask her where heaven is, or how she knows other dimensions exist, and I get nothing, just sophistry. You can't posit another plain of existence without any evidence to back it up. Heaven and Hell is just the carrot and stick of a religion. Hell used to be underground, clearly it's not and heaven used to be in the mountains, then the sky, then space, now outside space. This plain of existence is the only real heaven or hell.
If the hypothetical idea of an afterlife means more to you than the objectively true reality we all share, then you deserve no respect.