apeture never even made any weapons other than testing turrets
black mesa has security forces and experimental weapons
Have you seen the ending to Portal 2?
If not, then you do not know what you are missing.
Also, you forget that Aperture has neurotoxin, lasers, and robots everywhere.
Can Gordon Freeman be violently dissassembled then carefully reassembled?
The only thing he and Chell have in common is their resistance to death.