I'm a video game/sci-fi nut. The reasons are as follows:
1. Escapism. Reality is boring and real people suck.
2. Control. In my own worlds, I have complete control over everything. In the real world, I have little to no control over anything.
3. My brain latched onto them. I can't help what my brain wants to obsess over. Silly brain.
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"If we fail to anticipate the unforeseen or expect the unexpected in a universe of infinite possibilities, we may find ourselves at the mercy of anyone or anything that cannot be programmed, categorized or easily referenced."
-XFG (no longer a moderator)