With GitHub being the top platform for sharing source code and as the top choice for the basket of all our eggs, I'd wager we need DVCSs more than people need or appreciate today. And that's just considering how often GitHub is down today.

If we start to emphasize with people who have really shitty internet connections (which is a larger part of the world than you seem to think), we can start to understand why it's really useful to be able to share our code with our co-workers on our local network without having to rely on terrible, minimum 5s latency connections to US companies who basically don't care about you.

Note: centralized does not mean you can’t work in offline mode or share basic deltas

Now svn does have things I miss from the Mercurial world.. grep --all, fa --deleted, revsets, phases.. some could be implemented serverside in svn, but svn dev lost a lot of momentum post-DVCS (git esp).

But DVCS has issues that aren't an issue in svn land. History consistency, simple reliable narrow/shallow, people can work on files independently without syncing. (and a significantly more complex dvcs process)