This is an interesting analogy.
> Bikes use far fewer resources to accomplish the same thing
Bikes use a lot more time, which is a pretty important resource to most people. When I drive, that's usually why. So, are the additional features that Atom provides "driving saves significant time" variety or only "driving allows you to listen to the radio" variety? If the former, it might be worth the occasional freeze or slow down.
> If I used those charts to convince people to start biking, I doubt I'd be very successful.
I think if people actually didn't know that cars used more resources, the charts could have an impact on behavior. The fact that it's obvious (especially financially) means people already carpool or even (in cities) don't own a car at all. I don't think it's as obvious to some people that not every editor uses this much RAM, and you don't need another laptop upgrade, you can just switch to another editor.
> I couldn't care less... because it has practically zero impact on the environment or anyone other than yourself
I think you're right, but I'm not totally sure. If enough users refuse to use unreasonably resource-intensive software, then more effort will be spent on keeping most software efficient. We still seem to have plenty of options, but I'd rather try to convince others to use efficient software than eventually have to continually upgrade my hardware to keep up.