MIT spinoff Google-owned Boston Dynamics pledged not to militarize their robots. Which is very hard to believe given they're backed by DARPA, the DoD/Military investment arm.
You don’t value the city being cleaner? I live here and the city looks absolutely so much better. For one it has a lot less visual pollution and you can drive with less distractions… That alone justifies everything else for me.
As an engineer you should be familiar with laws and regulations. Try creating health care software without regarding HIPAA, for example, should make for lots of fun and lawsuits!