It seems like you practice kata hoping to find something there, why not just practice something like jujutsu, something more simplistic and proven to be practical?
Isn't the best self defense the simplest?
I to find it very hard to trust those "experts" of bunkai, tuite and kata interpretation, because as you say, it may just be that it is only good with a willing opponent and not one who is truly resisting.
"Poor is the pupil who
does not surpass his
master" - Leonardo Da