I’m waiting on delivery of an M1 MBP 16GB/2TB, which will be replacing my 2015 MBP 15in 16GB/2TB. So, opposite of base model...
As to the why, I do a lot of audio recording outside and about using a Blue Yeti Pro USB mic. Sometimes 3 Blue Yeti Pro’s and a Blue Snowball mic when indoors at my friends studio. I like keeping everything local, not having to worry about yet another cable or something using a USB Port. The Blue Yetis and the Snowball mic get all their power over USB, which is great! But I’ve found I need my MBP to be plugged in to get the best performance. Fine for one mic on the go, and everything works even better in the studio. Being able to pack up and carry most everything in one trip is great. Adding a drive to my bag means I need to take more care and make more room. More cables in a bag of cables...
I’ve also been burned before on failing external drives. Actually, many times now that I look back. But quite surprisingly not so often on the drives in my Macs. And very early on (with Windows) I lost all of my recording library...
When at home I keep my laptop docked and connected to a hub with multiple external drives for storage, media, and 3 Time Machine Backups. Plus 2 CCC backups of my recordings (which is in addition to my Time Machine backups). Knowing I’ve got the maxed out model today and that it just can’t be upgraded at all, is fine for me now and will be even better for me 5 years from now. The only reason I’m replacing my 2015 MBP is because of the battery. Still works great otherwise! I’m hoping to get as much use out of this new M1 MBP, hopefully more.
Anyway, sorry for the long post. External storage can be cheap in price & in quality, and to your point initially about basically offloading everything to either an external drive or to the cloud, sometimes I’m somewhere where I might not have an internet connection and might only have my backpack with my laptop and a mic. Having my entire recording library going back close to 15+ years, and not worrying about another piece of equipment is extremely handy for me. I’m a digital pack rat lol