But you've missed the main point (and shame on you, Motti, for not pointing it out): They are
EVIL!!!Okay, silliness aside, early in the game they can save your bacon. Before you have high levels of miniaturization, every space on your ships is precious. At second or third level min, you can fit an engine, one Psionic Laser (best of the lot for damage and position in tech tree), and enough defenses to make a decent small warship that can hold off early enemy frigates.
Of course, if you play games where you are
not being attacked by aggressive aliens when you don't even have enhanced factories yet, the evil weapons probably aren't worth using. You have time to build up your military with higher-level weapons before the slaughter commences.
Sometimes I stick just one on a ship full of doom rays or whatever I am using at the end of the game, just because it gets into the enemy crews' heads and messes with their minds and souls while their ship is being torn to pieces around them; for that extra little kick of the muahahahahas.


Spore. When you absolutely, positively got to kill every motherfrakker in the galaxy. Accept no substitutes.