One of the important pieces of advice that come from the Gra is that learning Torah tends to solve a lot of life's problems.
The questions that people have on Torah I think would apply to any system. The reason is that no mater what system is being implemented human nature will always demand that 95% of all the people in that system will be using it for personal motives of power and money and revenge and pleasure. That is simple human nature. It has nothing to do with the actual value of the system. The whole issue is on that 5% that are doing it sincerely if it actually brings them to a higher moral level.
And from what I could see at the Mir and Shar Yashuv in NY, learning Torah lishma [for its own sake-not for money] definitely brings people to a higher moral level.
The problem is those that learn Torah for money. This causes the יערוף כמטר לקחי ("My teaching will murder like rain") effect. See the Gemara Taanit.
However those few great Litvak yeshivot, where Torah is learned for its own sake, makes it all worthwhile. [And I wish I was able myself to be learning, but I figure it takes a certain kind of merit to be worthy of learning Torah that I just do not seem to have. Even the little bit I can understand is only because I learned from true Torah greats, like Rav Shmuel Berenbaum,(the rosh yeshiva of Mir in NY) David Bronson (my learning partner), and Rav Naphtali Yeager (the rosh yeshiva in Shar Yashuv).