I was just now wondering, what if an electron is really a black hole with electric charge?  (This being a pretty weird idea, it satisfies the primary rule of quantum mechanics:  Any theory must be weird to be good.)  Electric charge is one of the few characteristics of an object that is conserved within a black hole.  Within the Swartzschild radius of the electron (about 10⁶ Planck lengths), photons will be emitted and reabsorbed because they can not escape; this accounts for electrons emitting and absorbing virtual photons which produce virtual pairs of particles  and their antiparticles.  This allows for the cloud of particles which predicts the momentum of an electron.  Furthermore, spin is also conserved within a black hole, which might help explain how an electron has spin.  Personally, though, I think this particular idea about spin is hogwash, but I'm prepared to work on it.  (Tinker, tinker) hmm, now that I've worked on it, I can't find a problem.

                This whole idea is pretty hopeless.  A black hole with a Schwarzschild radius of 10⁶ Planck lengths would evaporate long before 15 billion years elapsed.  If an electron is a black hole, then there has to be a way to either stabilize it or else keep feeding it so that it doesn't evaporate.  If there is a way to keep feeding it, it must be a very strange way to do so.

                One feeding possibility comes from absorber theory. Maybe when an electron emits a photon, it actually emits two photons and disappears by evaporating. Then those photons, one traveling forward in time and one traveling backward in time, reassemble at the location of the new photon that appears in an appropriate quantum state associated with another nucleus or something.

                Another problem is the way all electrons are the same.  Why would they all have the same mass and the same electric charge? 

                How to Feed a Black Hole, by atomsnoexist.  Boy, this is REALLY strange.  A black hole requires the nourishment known in scientific jargon as mass or energy.  However, E=mc².  Also, E=hn.  Therefore, if a photon enters a black hole electron, it will feed it a certain amount of energy based on its wavelength (n) and this energy could be the mass needed to prevent evaporation.  The question arises, what frequency of photon would feed a black hole electron?  We know that certain frequencies cause an increase in the quantum energy level of the electron, which are associated with a change in the distance from the electron to its nucleus (sort of).  Maybe, the energy that feeds the electron is a new kind of energy.  Since I'm really crazy, I have no problems making such a suggestion.  Besides, this whole line of reasoning is crazy.  This is crazy, this is crazy, this is crazy, this is crazy, -jump-. 

                One silly part of this is the need for each electron in the Universe to eat exactly enough energy to stay alive and no more.  Considering the differences in locations of these electrons, this presents a major difficulty to the theory.  Electrons that are clustered together need the same amount of energy as electrons out in the boonies.  An energy quantum must be able to pass through a bunch of electrons to reach the one in the middle.  Without a bunch of electrons around it, a boonies electron might get energy quanta that would be absorbed by surrounding electrons.  This would make it fat (quantum theoretically fat).  Hey, maybe the electrons in the boonies get more exercise!  I'm serious.  Can't you tell when I'm being serious?

                You know, if it rains quantum theoretical raindrops, you won't get wet?  If a raindrop hits you, then you know where it is.  If you know where a quantum theoretical raindrop is, then you don't know its momentum.  It has an equal probability to be traveling in any direction.  Since only half of the directions are toward you, the rest away from you, only half of the quantum theoretical raindrops will make you wet, the others will make you dry.  Therefore, you will suffer no increase in wetness from the rain.  I like to quote this when I'm seen walking in the rain without an umbrella.  I'm not sure whether it makes me seem more strange or less strange for not bringing an umbrella (I tend to lose them), but it fits, and people stop bothering me about not having an umbrella.