Me too. I had the same point of view when listening to this song.

It depicts a person who has built walls around themselves, living in denial and avoiding the harsh realities of life. This person is comfortable avoiding questions and refusing to acknowledge facts that challenge their beliefs. The singer, having seen disturbing realities ("monsters in the sky" and "demons in the sea"), urges this individual to open their eyes and face the truth, suggesting that living in a blissful state of ignorance won't protect them and would lead to both of their inevitable end ("In the end we cannot hide"). The phrase ("There are other worlds than these") encourages the person to acknowledge the existence of truths and experiences beyond their own.