I think the problem is that NoSQL has been the cool new thing, which causes people to use it without really understanding why it is better/worse than other solu

I think the problem is that NoSQL has been the cool new thing, which causes people to use it without really understanding why it is better/worse than other solutions. Tools like MongoDB can do things that are extremely difficult or impossible with MySQL/PostgreSQL and they are a great choice for those situations. Using it simply out of laziness or misunderstanding, though, is probably going to create problems later.