-They became a staple in stuff like Star Wars when we didn't know as much about the subject as now
-Easier to animate
-No recoil
-Infinite Accuracy at Range
-Although both require substantial amounts of power, lasers do not require a reload.
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Yes, but magnetic weaponry requires less power than energy weaponry. And energy weapons still need to be recharged or have their battery replaced.
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And you can blow off walls with it In my opinion a rail gun or gauss gun are way better And they do [i][u][b]MUCH[/b][/u][/i] more damage to lower energy use unlike laser weapons