I think As a payment system, it is where things are slow in development but I can see that soon there will be a new change on this aspect because there really are people who are working hard to test new ideas for Bitcoin. As an investment tool, just like physical gold, there is nothing wrong with it because we are giving people choices about what to do with their Bitcoin ... this is an open market anyway.
We have to remember that compared to paper money, Bitcoin is actually only young and the way I see it dust has not been resolved and the fact we are just getting started. We have to give Bitcoin and the market more time because the whole process can take a lot of time and years before we can conclude that Bitcoin is a huge success or just another unsuccessful man-made business. Unfortunately, no system can kill greed ... but blockchain technology can somehow minimize the side effects of greed. Because as long as we are human and not yet an angel, greed will always be a part of us and in all industries (even religious ones) greed will always be there.