The thing is that crimped fastons rarely ever break off, if you crimp them to the correct gauge wire.For one thing, i like to reuse the terminal even if the wire breaks off, and crimping does not allow this. There's no secret here.
Soldered wires on the other hand break off basically anytime you give them a bad look.
The company I work for does electronics for railway industry and all the wire connections specifically have to be crimped.
Also the fastons are so cheap I wouldn't even think about reusing them.