[jdquey]

Agreed. I find it depends on how people go about talking about the subjects.

I think it has to do more with the potential impact it has on us and others. Not to mention how much broad appeal there is.

I don't know much about Javascript, but debates about how to properly use it aren't going to change a nation. Or the implication of someone's life, both now and after death.

People have a lot of opinions on baking. You don't need to be an expert to blog about it (e.g. probably 1/2 the mommy blogs out there). But again, who cares if you add organic cheese to your chili or sour cream? Very few. And most would remove it if not important.