I know a lot of people don't like it, but I actually adore it. Like all things though, it depends on how it's done. If the author uses a trippy dream sequence to relay important characterization to the reader, I think it usually works very well.
And I know people sometimes don't like it when dreams are used to relate past events or exposition, but hey, sometimes it's the easiest way, and I don't hold it against any authors. XD A lot of people just don't get how hard it can be to incorporate a past event in a really logical, organic way, you know?
But, whenever someone says a certain method of storytelling should be made unavailable just because they don't like how it's been being used of late, I usually just close my ears and do my own thing anyway, haha. Dream sequences can actually be one of my favorite parts of a story. <3