You're probably right. Apple's got a SEVERE case of self navel-gazing. I just hate ditching over 2 decades' worth investment into Apple (Computers -- remember when they were called that?) products.
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No, not problem solved. Actual PROS need a variety of ports. e.g. Just a few weeks ago for a live performance using my 2010 MBP I used the 1) Mini Display port to project synchronized video onto a giant screen in HD -- plugged directly into the venue's video system. No adapter needed. 2) Firewire port into a NEW audio interface box to route multiple audio signals. No adapter needed. 3) Used the "standard" USB connections to move files around via USB thumb drives. No adapter needed. 4) Used the ethernet port to connect to and program a WiFi extender. No adapter needed. 5) Used the SD slot to import pics from an actual, real CAMERA. No adapter needed. 6) Used the CD/DVD drive to create a test mix disc to play on a boom box/in the car. No adapter needed.
You see, in the real world, despite what Apple says and has led you to believe, NONE of these things are obsolete or a dead end. They're in use everywhere, every day. So no, requiring a bag full of adapters (and which ones to get when?) is not problem solved, it's problem CREATED.