[V-2]

> Well, I didn't care much for torrent and email in Opera 12, but they didn't bother me either, as they didn't seem to spend any resources when they were not used.

That's true, but they surely spent their resources on developing these extensions. In hindsight, this wasn't such a good bet. Case in point: noone else did that, and this approach is rather outdated now.

[rplnt]

Not entirely true with the email as it was also (or only I guess) used as RSS reader by many people.

[V-2]

So-called "superusers" are probably overrepresented in your circles (as in mine), and thus your point of view is kind of skewed ;) Ask your family members or people on the street, an overwhelming majority of regular internet users won't have a slightest clue what an RSS reader even is