5) Sending microtransactions
Curious point of fact, unless the forum's search function is failing me, satoshi never actually uttered the word "microtransaction" on this board. And the word "micropayment" was only used on two separate occasions. A number of utterances
in this post in direct response to a person asking about sending a single satoshi (and I assume that's not quite what you meant by "microtransactions"). And again in this post quoted below, but only in regard to custodial wallets:
In the meantime, sites like
vekja.net and
www.mybitcoin.com have been experimenting with account-based sites. You create an account on a website and hold your bitcoins on account there and transfer in and out. Creating an account on a website is a lot easier than installing and learning to use software, and a more familiar way of doing it for most people. The only disadvantage is that you have to trust the site, but that's fine for pocket change amounts for micropayments and misc expenses. It's an easy way to get started and if you get larger amounts then you can upgrade to the actual bitcoin software.
And (getting slightly off-topic), given what we know about custodial wallets now, it's a little surprising to read those words from satoshi, heh. Still, those were the very early days and hindsight is always 20/20, etc.
So, with all respect, are you sure you aren't conflating
satoshi's original vision with the vision of some early adopters who perhaps got a little carried away with the potential and subsequently raised your expectations higher than they otherwise would be? Not everything lives up to baseless hype and there certainly was a lot of that back in the day. People just naturally assumed that sending tiny amounts was viable and started shouting it from the rooftops.
3) For fractions of a penny
It's also worth bearing in mind that when satoshi was still around, a fraction of a penny was a vastly different sum of BTC to what it is today.