If it's not distressing you or causing you problems in your life, then in my opinion it falls under the "mysteries of the universe" category, doesn't need to be right or wrong. Just like wondering if there is anything more after bodily death, there is no way to prove or disprove.

I do think that even Stephen Hawkings has spoken a bit on the topic of different dimensions in the sense of parallel universes and so on. It's not just "ill" people who wonder and explore such things. Everyone has the right to acknowledge their experiences and wonder about them.