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by gpm 2179 days ago
Because they have to know who you are in a fair bit of detail both to comply with the law and to know who they should let take money out of the account. Because they need you to agree to a bunch of contacts. Because they need to get you things like a bank card. Because they need to decide if they want to lend you money (most often in the form of a credit card). And so on and so forth.