Because I think, "I can sell these upgrade for only a little bit more" so I buy the next pair but never get around to selling the first, and end up procrastinating so long they lose enough of their value that it isn't worth it anymore. Rinse and repeat.
Because I think, "I can sell these upgrade for only a little bit more" so I buy the next pair but never get around to selling the first, and end up procrastinating so long they lose enough of their value that it isn't worth it anymore. Rinse and repeat.