[Fyron]

well, actual evil overlord's need a psychiatrist, not SE, in my opinion.

You have missed the point again. Everyone has such fantasies. SE is only an example. It is just like when kids play "cowboys and indians" or "cops and robbers." Video games are just a different form of the exact same outlet for your subconscious fantasies and desires (some of them, at any rate).

early childhood does shape a person and can make a person more or less a certain way.
i certainly had a temper before i went through school, but it was an undefined tantrum thing that may well have gone away as i grew up. after i went through school, it was worse.

What happens in early childhood helps to shape a person, but it is not the only factor. People are naturally predispositioned to certain patterns of behavior from day one. A person's base personality is a combination of genetics (which is random and independant of the parents; this is why you rarely (if ever) see children having the same base personality as their siblings, not even identical twins) and environment (surroundings, experiences, parents (and other family), etc.).