vegetarianism by Muslims - No health related reasons??

Re: vegetarianism by Muslims - No health related reasons??

Is it cruel to kill your son in general? Do you think this is a prescriptive story i.e. it is in general a good thing to take your son to a mountain and get ready to slaughter him unless a lamb appears in its place? Or do you think there are certain specifics in this story that dont necessarily mean that all of us cant draw every possible inference from it?

God/Allah also did not place a chicken there. Ergo lamb is better than chicken?

Now that we have dispensed with that bit of fantastic reasoning, can those saying we cant have right/wrong notions outside of halal haram answer the questions I asked before. Is someone who feels that electric vehicles are good and petrol cars have a damaging impact on the world committing a haram act in switching to electric cars, simply by virtue of having a notion of good/bad about two alternatives that are both halal? He can drive an electric car normally, but if he thinks its better that he drives an electric car, he MUST switch over to petrol immediately. That seems to be the implication of this line of thought.