The point is that Samsung is not being loyal to it's user base. This is one of the reason I've stuck with Samsung since the SG2 days. They now offer nothing that significantly sets them apart from competitors. i.e. Google or Apple, whereas before simply having the Mico SD slot gave them a leg up for power users.
Some people, like myself, like the option of having access to their own media like their own ripped movies, audio-books, music, or other files like backups and documents. Other options, like cloud or on-board storage, are cost prohibitive. Also, the cloud options are impractical/inconvenient for people with a limited data plan or who travel a lot and lose access to data or a fast network.
For people like me, I'm looking at other options now and their competitors.
Your analogy with gas stations isn't at all comparable because adding the option for an Micro SD slot isn't at all costly to the manufacturing process, the parts and capabilities are literally pennies in cost to the manufacturer. A more apt analogy would be adding air compressors to the already existing stations. Not every would need or use it but it sure is convenient to those who would like it and it adds additional appeal to use their stations as opposed to the competitors.
The issue of speed is a non-starter because the option of built in storage is still there with/without the Micro SD card. If you don't use, it isn't an argument NOT to have it available to those who would prefer it.
