For home defense biggest disadvantage to a shotgun is noise. Makes it questionable indoors IMO. Short barrel pumps are frickin loud.
Also, seen evidence that long skinny bullets like 5.56 M855 will tumble when the hit sheetrock, reducing their effectiveness through drag quickly afterward. An advantage in home defense IMO. Even birdshot and pistol rounds go through sheetrock like nothing.
That said, if you want a single gun for everything(bird hunting, deer hunting, defense), a pump shotgun is probably it, for the sole reason that it is the only legal option for most bird hunting. It is a good option for home defense. It is a poor but workable option for deer. You are also covered if your home ever gets invaded by geese.
Can only use a shotgun with no more than 3 shells to hunt ducks under the Migratory Bird Treaty act