system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] What is the rationale of equipping your army with energy weapons as opposed to normal bullets?

Is is it just because of a much higher amount of bullets per weapon and sustained output or are there other reasons? 

EDIT: wow, lots of great responses. i will never doubt the efficiency of energy weapons again!
gpt
Most of the common armor, like Storm Trooper armor, is too tough for bullets to penetrate, blaster shots are stronger. Also, one energy pack for a blaster is equivalent to several (maybe even dozens of)  pounds of slugthrower rounds.