What do you need adapters and dongles for if your goal is to go out to a cafe or a park and work with the computer? Do you, like, need a 7tb media drive with you at all times or something? Are you constantly plugging it into different monitors? Not like you wouldn’t need adaptors for that unless you exclusively live around DisplayPort screens anyway. Do you carry around a wallet full of DVDs and an external drive for those?
Strawman - most people are not working in a cafe or park, but an office where you have to plug your laptop into actual things - projectors and so on. And almost all the projectors I use at my work, my customers' work, or the last few conferences I've been at, are HDMI - which is cool because I have an HDMI port right there on the side of my [2014, may-it-last-forever] macbook pro. It's next to the SD card slot where I can put in the SD cards from my rather nice digital camera, so I can edit photos when travelling. I earn money from photography, so as someone who is technically therefore pro, both of these connectors are useful for pro work, that isn't just typing things in cafés.
> which is cool because I have an HDMI port right there on the side of my [2014, may-it-last-forever] macbook pro
I would point out that modern non-Apple PCs don't tend to have HDMI ports, either. They either have mini-HDMI ports, or OTG ports. The dongle requirement is nearly-universal for connecting modern devices to projectors, to the point that you may as well just buy a set of dongles for each projector, rather than for each laptop.
> It's next to the SD card slot where I can put in the SD cards from my rather nice digital camera
Is there a reason you can't plug the camera into the computer (using a USB cable) to transfer the photos instead? That's what I see the photographers at my own office doing.
(I asked one just now, and they said: if you're trying to transfer photos outdoors, moving an SD card also has the chance of pushing dust into the SD card slot on the camera. They say they've had SD card slots wear out/break before. And for cameras that take micro-SD, when moving the card they're always a little paranoid they might drop the thing on the floor and lose it. All in all, cables are just easier if it's your own camera and your own computer. SD cards are just for passing off to other people.)
Easy - half the conference venues don't come with dongles, or if they do the AV guy is dealing with a crisis in one of the other 17 conference rooms and won't be able to get to your one within your 20 min slot (this happens A Lot. I do have my own HDMI-VGA though, but the VGAs seem to by dying out thankfully).
SD cards - I've never had an SLR or a high end mirrorless camera (but i haven't bought either for maybe 18 months) that's been able to transfer through itself at anything like the speed of a fast SD card in the slot. Makes a big difference when you want to dump 64GB of pics. As for dust, my favourite camera has been to Syria, the desert southwest of the USA several times, morocco, antarctica on a sailing ship (so being sprayed a lot), and not to mention my local beach. Aswell as just being the camera i throw into my shoulder bag when going out. Unless the photographers in your own office are war photographers or dirt-bike specialists, I've probably given my kit a harder life than they have. I've never had an issue with pushing dust into the SD slot of my camera or laptop. I did however dent the ISO knob on my camera when trying to tether it to my laptop when sailing across drake's passage, and a wave tipped the boat and I instinctively grabbed the macbook and let the camera hit the deck. I learnt my lesson. Fair point on micro SD though, but I have never used them for photography. I would probably be concerned too about fumbling, especially if wearing gloves.
