There are probably many reasons; this post on bitcointalk lists most of them: https://bitcointalk.org/index.php?topic=313806.msg3367122#msg3367122 https://bitco

There are probably many reasons; this post on bitcointalk lists most of them: https://bitcointalk.org/index.php?topic=313806.msg3367122#msg3367122 https://bitcointalk.org/index.php?topic=313806.msg3367122#ms... (I know this forum is pretty bad in general, but I like that specific post.)