2 Corinthians 3:6
"He has made us competent as ministers of a new covenant--not of the letter but of the Spirit; for the letter kills, but the Spirit gives life."
The problem with churches today is that they are founded and perpetuated on tradition, not the Spirit. The habitual and often mundane repetition of the letter with little to no explanation or even discussion of its true meaning. In other words, all broth, no noodles. The soup base is there but all the other ingredients to make it truly nourishing and hearty are missing.
There is a lack of spiritual leadership because there is a lack of dedicated obedience to Christ. People in these modern times tend to be very lax about it and do not take it seriously, because of this they cannot reflect the true potential of Christ because they are still living in their sin natures. Not many people truly try feverishly to do the right thing; most people think they can just be casual about it and it doesn't matter because Christ is merciful and forgiving. However they seem to disregard this:
Matthew 5:18
"For verily I say unto you, Till heaven and earth pass away, one jot or one tittle shall in no wise pass from the law, till all be fulfilled."
In other words if we are truly dedicated to Christ we will give up anything about our lifestyles or our nature to commune with Him. Many people often "undo their belts" as it were because they live under the axiom that no one is perfect. Which is true, but it doesn't mean that we can be sloppy and half-hearted about it.
Thusly, as with anything that is done in slack, the result of that slack effort shows in the finished product. Thus we have churches that do not rightly nourish us, do not offer the proper support to keep those young in the faith standing upright, and likewise cannot help us up when we falter.