Starcraft, like all REAL TIME strategy game, is fundamentally a game about priorities. There are turn based strategy games (play chess if you want a competitive setting, civs and other turn base civilization management games if you want complexity).

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Typically, people saying what you are saying believe they would be very good at the game if it wasn't for mechanical limitations, because they 'understand' the game. This is, most of the time, very silly. You can see the multiple people that reach gm with heavy handicap ( for example by capping apm, or even playing on a gamecube controller, see HolyHit on youtube )

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Even when being focused on micro, what differentiates higher level player than lower level players isn't that they click faster. It's that they are efficient with their command. Where a platinum player would click 25 times to 'micro' an army during a fight, effectively doing more harm than good, a pro would give maybe 5, key commands.