I care less about the "Feds" than Comcast, my mobile provider, or literally any other actor on the SMS chain. Not to mention potentially corrupt local law enforcement or litigious former-friends.
Encryption, like deadbolts, helps society function.
Signal doesn't keep logs, and is end-to-end encrypted without a key escrow or plaintext escrow backdoor for the transiting middle service. You can review their actual response documents to law enforcement.
