[dchichkov]

In my opinion the fact that Wall Street is not functioning optimally (with all that insider trading, front-running and just downright crazy gambling with other people's money) is very much a real world problem. It is also an important problem, because one of the functions of equity/futures markets is allocation of resources in the economy at the global level. And it is very important that the allocation is done right (that is, resources go to Tesla/electric cars/airplanes/etc and not to build yet another palace to some oil-lord, etc).

disclaimer: I'm currently in finance, but I'm primarily an engineer/researcher and finance is just one of the many areas in which I was working over the years.