I do believe dreams hold important meaning, I used to think my dreams were nonsense but after writing them down and reading them over I realized all of them had meaning. Some was merely things I thought about during the day while others were subconscious worries or fears. While there can be some nonsensical elements, most of them don't come out of nowhere. I can't interpret your dream for you, you're the best one to interpret your own dreams because you know better than anyone your own life and situations. But 'end of the world' dreams perhaps mean you're wanting or fearing or going through big changes in your life?