[ibbih]

It's a bit more complex than that right? If no part of the user wanted this, it wouldn't drive up engagement. Clearly it causes me to use the product more. Companies can try to optimize for stuff like "satisfaction after using the product" but it's genuinely much harder -- and not tying work to business outcomes is not scalable.

[bluGill]

Most drug addicts don't want to be addicted, they just want the high. Most video watchers want to continue their current shows, but if you make it easy they will get addicted to shows they didn't know they liked yet. People get on facebook for their friends, and then the infinite scrolling keeps them on long past when they have seen almost everything their friends have done.