It's a relatively huge amount of power in a tiny package, ready to roll. Many digital logic tasks that used to take a number of TTL/CMOS logic chips, or other devices can now be done in one inexpensive package.
A simple example: every week it seems, on the electronics forums, someone will ask how to do a simple, or a complex timing task and they will be pointed at various logic, or 555 timer chip designs.
Using something like this not only makes those projects simple, it provides a common frame of reference. If I can say to someone "go buy a Trinket from Adafruit and load this code into it and it will work cause I already tested it on my workbench" that provides a tremendous value because both I and the person I'm talking to online are working from a common platform.
A simple example: every week it seems, on the electronics forums, someone will ask how to do a simple, or a complex timing task and they will be pointed at various logic, or 555 timer chip designs.
Using something like this not only makes those projects simple, it provides a common frame of reference. If I can say to someone "go buy a Trinket from Adafruit and load this code into it and it will work cause I already tested it on my workbench" that provides a tremendous value because both I and the person I'm talking to online are working from a common platform.