Why limit the capabilities of the device by *not* having key pairs?
I'm still waiting for a substantiated argument from you.
Oh, and a motorized bicycle is a bicycle with a lightweight motor that can be engaged *optionally*, so no need to pollute unless its absolutely necessary. And when its absolutely necessary, you'll be sorry you only have a push bike. But I noted that as an advantage.
My silly example was to show how absurd your stance was... But to my surprise, it actually showed you choose to ignore things on purpose.
That, as WizardStan pointed out... Is ignorance.
Oh, and a troll is someone who deliberately provokes confrontational responses. You could have avoided all of this by simply saying:
"I recognise the advantages you describe, but they mean nothing for me so I don't regard them as advantages."
That is how to state your position without being a troll.
Don't feel too bad, we all do it.