Life is about trade-offs. In theory, the benefit of security for the masses outweighs the cost of confidentiality provided to criminals. There are also other

Life is about trade-offs. In theory, the benefit of security for the masses outweighs the cost of confidentiality provided to criminals. There are also other ways of potentially getting the criminals' e-mails you need other than snooping (e.g., Google can disclose your e-mail to law enforcement) or getting the intelligence on criminals beyond e-mail altogether.