Do you actually have any equipment that comes with Thunderbolt3/USB-C cables? My office currently buys new hires at least one dongle plus an hdmi cord because our monitors don't come with a USB-C cable (if yours do, please let me know what you're purchasing). Wireless mice and keyboards that use the USBs need dongles. If you go into a random conference room (at work, at clients etc), many places will have hdmi cords which you used to just be able to plug in. Instead of having a laptop that "just works" it's now a pain to ensure that new hires have all the equipment they need.
I'm probably a bad example because my setup is hilariously kludged together.
I use two circa 2007 30" Cinema Displays, so from the laptop it goes Thunderbolt 3 > Thunderbolt 3 Hub > Thunderbolt 3 to dual DisplayPort > 2x DisplayPort to Mini DisplayPort > 2x Mini DisplayPort to Dual-Link DVI > Displays.
The upside is that my MacBook is connected to all that with a single cable that includes power. For peripherals I use bluetooth. When I travel I just carry that Apple HDMI/USB/power breakout dongle and it covers every situation I've found myself in so far.
