Yes, it lack of faith. Partly due to poor doctrine being preached to far too many, and partly due to the fact that most modern folks have been tainted by the modern world and their poor heads are filled with nonsense.
Holiness requires a certain simplicity of spirit, absolute obedience, and complete devotion.
Few are those who have the will to pursue it.
I agree only with this first part of your post.
There have been a few wonder workers in the last century, Padre Pio is a good example. Monks and nuns tend to make the best saints, due to their calling they are already half way there. There have been a few Protestants that
have had various gifts also.
"Best saints"?? "Calling"? "Half way there"? Hardly.
Be aware that there are a host of frauds out there also.
Yep.