It's just too much of a hassle when something goes wrong. I open my filing cabinet and review the file in two minutes. Don't need power, web access, and in seven years you can use it as toilet paper (try doing that with your email).
It's unlikely someone will hack into my locked filing cabinet but your email suppliers and banks accounts are constantly being attacked and they don't tell you if someone gets in. If they can get into the CIA computers thousand of times a day I doubt your pc can protect your information.
Also I have noticed that often my online statements are not consistent with the amount I owe and FYI many companies have policies were they are not required to give you refunds for billing errors charged to you unless you specifically request a refund.
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