I don't care about saving money. I care about saving time and frustration.
I can solder everything in place and it holds great (I did this on my first CP), but man it took forever.
With crimp connections, it's faster, easier, and if there's a problem, it's easy to replace. Need to run one wire to two switches? Male and female crimp connectors are a quick way.
Need to unhook and move something to a different location? You just unplug it (no de-soldering!).