Remember that a folder is a compromise for portability. It will always be, as they are not as strong and simple in operation. Sure, in most situations a folder is fine. What happens when your out in the jungle and need to get through the underbrush or if you need to chop a larger branch off then what you usually use for fire (one for making shelter, a raft, bridge, ect) and you don't have your saw on you. I wouldn't say it is a huge loss having a folder instead of a fixed blade, but a fixed blade is more capable and is the less complicated tool. Therefore, it is technically the better of the two to have. Like you said though a fixed blade isn't always the easiest thing to carry, which is why folders were invented.