If you are at your desk 99% of the time, but you need to go somewhere 1% of the time, then you have to get a laptop. That's why everywhere you look people work on laptops docked to external monitors, keyboard and mouse.
I think often the reason why lots of people get laptops even if they're only going to be using them on a desk at home is that they think that that's what a personal computer looks like, and that stationary 'towers' are for geeks. Some might also look at a mac mini and think "nah. I'll just get a normal pc", and they get a laptop.
Anyway, I thought I'd just have a little brag about what I've been able to do with my Mini:
Connected to the Mini:
Ethernet: gigabit web connection.
HDMI: My main screen; 55" LG OLED TV.
One 2TB NVMe SSD in Thunderbolt enclosure. One USB3 2TB SSD.
A Thunderbolt-connected powered Setachi hub with three Thunderbolt 4 ports, three USB 3.2, and one 2.0, gigabit Ethernet, SD card reader, and sound input/output.
Connected to the Setachi:
A third 2TB USB3 SSD.
My secondary display; a 32" Benq, color calibrated for photo work.
One extended keyboard (wired)
Plustech Opticfilm slides/negatives scanner.
A Topping E30 II DAC for exceptional sound.
Two Avid Artist Mix units, mixer controllers for controlling mixing in Avid Pro Tools DAW, connected via a Ethernet switch to the Setachi.
One SSL UC1 to control channelstrip plugins in Pro Tools, USB3.
One MIDI keyboard.
Lots of unused ports left. Even the Benq display has two USB-a ports and a SD card reader. I'm using one USB for a small web camera.
Connected over Bluetooth:
Three sets of magic mouse/keyboard in different locations in the room, one extended keyboard, and one with Touch ID. Airpods.
Connected over wifi and Bluetooth:
iPhone. iPad. Macbook Air. Epson P800 and P600 photo printers.
I'm retired, and I don't have much happening in my life anymore except enjoying my ever-growing number of grandchildren, and with all the money I save from not painting the town red every other day anymore, I'm not ashamed for spending this money on my own guilty pleasures.
I'm pretty pleased with my setup, and I hope this can help show some of what a modern mini is capable of. And last but not least; all this just works pretty much flawlessly, thanks to macOS. It handles all this for me. It's amazing.