Cleaning you microwave does not need to be as bad as you think. One easy method that will do all or most of the hard work for you is to put a bowl of water in to your microwave with half a cut up lemon and put on full heat for 3 minutes. the steam that it creates will soften and break down the food debris within your microwave so all you have to do it take out the bowel and the glass plate and wipe down the inside of your microwave and the door, Finish off wiping the outside of your microwave and you are finished.
What you can do also is buy your self a cover to place over plates and bowels when cooking in the microwave and any splashes will in in the inside of the cover and not your microwave. These are inexpensive to buy and saves you time having to clean your microwave and also good at keeping flies of your food when left on the kitchen side in the summer.