Many fishing trips have a lot of uncertainty. There's always concern about other anglers getting to the water before you. Will the weather hold? Are the conditions going to be right? Usually there's a long drive involved and you just don't know how things are going to be until you get there.
Even after you get there and things seem right there are still doubts about the fishing.
I cast into each pool with hope that a fish will be there.
More often than not nothing happens.
Every once in awhile you get lucky.
In between fishing spots you fight moving rocks and spider webs so thick they should be called spiders ropes.
Even with all the effort and trouble. It's worth it.