the quandary of how to choose sides that don't involve the house salad, a corn muffin or baked potato appears to be rather arbitrary. this is turf war; bed and box spring style, where size mattereth not. it is less about the real estate and more about location, location, location.
my research question was specific to the post coital, nocturnal layout, or who slept on which side of the bed. the sample group comprised of a married couple, co-habitters living in sin, and a newly single co-habitter. additional information was collected regarding the nature of disputed land and who really won the coveted spot "nearest to the toilet".
the findings were fairly broad and motivated by both physical and emotional extremes. the token husband reported that his wife insists he sleep nearest to the door. the assumption being that if an intruder were to break in, he would provide a "human shield" and absorb any potential stabbings. interesting rationale.
late night bedtime butchering aside, territories are typically argued over based on their proximity to, and ground clearance for, the inevitable bladder run. i personally tend to be compulsion driven, and have historically "slept on the left", whether it's at the holiday inn, in a tent, or a bunk bed (for the record, i sleep on the top, in case there is a fire i will have more of a chance). however, due to changing floor plans over the years, i have since been out-voted by other's incontinence. revenge is mine though. any of my unscheduled nightime toilet visits usually involves scaling a snoring, farting, heaped hurdle ("ooh sorry, did i wake you?") to get to the other side. of course if my nocturnal eneruresis becomes too much of a problem i can always invest in some night time pull ups.