I agree--people tend to make it look as though making bar soap is hard, and i haven't failed yet. Even my baby soap batch that looks like a bunch of rice krispie treats--it's ugly, but it works!
Liquid soap, however, is a longer process that i haven't gotten around to yet. Thing is, you can use bar soap for just about anything you'd use liquid soap for. We're used to the convenience of liquid soap, but it's really not necessary in most instances.
What did you want to use the castile for?