We already know that the government watches activist groups, Muslims and journalist without warrants, this has an effect on the peoples ability to freely associate, speak, consume news and worships. All those activities are supposedly protected by the constitution, that is why people should care. We also know that there is no meaningful over site about how this data is used, just because your are honest doesn't mean that your data can't be used against you. Administrations change and just like this administration they always don't play be the rules. There are any number of dangerous or upsetting situations that could occur from malicious use of a person data. We have no evidence that this level of surveillance or expense has any where near the level of benefit that it costs (both in money and in freedom).