Hell no. I like weird settings. My last two homebrews were as follows:
1. A world with no terra firma, in which the only solid substance was huge boulders floating in an endless sky, travelled by flying ships and winged elves. Arcane magic is banned by the gods, after a mysterious blasphemy committed ages ago by the ancient magical civilization whose ruins can be found all over the world. The cataclysm invoked to correct this error erased all traces of arcane magic, and threw the world into a dark age from which it has only recently recovered. Psionic power has filled the void left by the arcanists, but mysterious magical objects from a bygone age turn up from time to time, and the three great cities vie for control of the last remnants of arcane might. Crystal miners grow their materials in the smoggy, toxic region that lies beneath the floating islands, and all manner of avian creatures float among the clouds. Air pirates raid villages and transports, while the few elves who remember the cataclysm weave their secret plots with knowledge long forgotten by the rest of the world.
2. A magical society faces a problem: its borders extend to all parts of its world, and population pressures are mounting. Where to expand? The logical answer: the planes! A great gate is built, and scouts sent through to find other Prime planes to inhabit. A few groups of settlers are sent to habitable worlds, but then the unthinkable occurs. The gate returns to pick up some scouts from a certain world that turns out to be inhabited by a strange and powerful group of creatures: dragons. The dragons had caught the scouts, and were waiting for their chance. Chromatic dragons poured through the gate like a river, destroying and plundering as they came. The wizards who created the gate destroyed it to stop the influx, but it was too late, and they only cut off the bulk of the forces of the metallics, who had discovered the gate too late, and were attempting to follow their foes through to this world rich in magical treasure and unprepared to defend themselves against such an onslaught. Fast-forward 1000 years. The evil dragons have parcelled off the world into small kingdoms, each ruled by a dragon lord. The metallic dragons rule their own corner of the world, almost as oppressive as the chromatics in their pride and self-righteousness. Lesser reptilian creatures have displaced many of the native species, and most people live like slaves to their draconic overlords. But rumours from the east tell of a place that has killed its lord and established a free kingdom. That means that the dragons are mortal after all! But is it a lie, or is there a change in the winds?