Actually, I would argue that the manga stories at least make an attempt at showing that the power is not any more special when wielded by one person over another all else being equal. Even Sailor Moon made an effort to show that everyone came from the same place and that humans are not any more special than other entities. The only reason humans seem to have it better is because of the relationships we build among ourselves, not some amorphous "special thing" that defaults us to being more special (or even the senshis).
To take your backfiring example, when Sailor Moon's crystal is taken, the power doesn't backfire. In fact, it's amplified in the hands of people who know what they're doing. Only when Sailor Moon is driven far enough does she bring out the power of the crystal equal to that which her nemisis was able to use. The only "special" thing that makes Sailor Moon suited for the silver crystal is her royal breed and, let's face it, its better for us that she holds the power rather than some being that wants to suck our brains out.
And when a series does make someone special, that somone tends to bear qualities that the rest of us can also have, thereby not precluding others from the specialness. In other words, most of the time the power is meant to be had by men, and not something that's taboo. Then again, most of the time said power is also sentient and tends to have personality disagreements with those "not meant to have", just as some people are not meant to settle down and marry, but that's another topic altogether.
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To take your backfiring example, when Sailor Moon's crystal is taken, the power doesn't backfire. In fact, it's amplified in the hands of people who know what they're doing. Only when Sailor Moon is driven far enough does she bring out the power of the crystal equal to that which her nemisis was able to use. The only "special" thing that makes Sailor Moon suited for the silver crystal is her royal breed and, let's face it, its better for us that she holds the power rather than some being that wants to suck our brains out.
And when a series does make someone special, that somone tends to bear qualities that the rest of us can also have, thereby not precluding others from the specialness. In other words, most of the time the power is meant to be had by men, and not something that's taboo. Then again, most of the time said power is also sentient and tends to have personality disagreements with those "not meant to have", just as some people are not meant to settle down and marry, but that's another topic altogether.