Apart from the other reasons listed, modern battle groups are equipped with close-in weapons systems like the Phalanx which have a decent chance of shooting dow

Apart from the other reasons listed, modern battle groups are equipped with close-in weapons systems like the Phalanx which have a decent chance of shooting down inbound airborne missiles, especially if they're not ballistic. That and the fact you can launch underwater without disclosing your position makes it a pretty compelling weapon.