I thought I would like to answer the question by myself first sharing my view on this. According to me, the main reason why people would prefer musing over other steem platform is that they will be able to write short answers and questions in musing.

In the writing sense, Most of the other platforms mentioned here demand a decent article with a decent word count. For you to ask a question, you will not need a minimum word count. You can just ask any question that comes to your mind.

In the reading sense, there are some people who do not prefer reading big stories. If they really want to spend some time in the blockchain, they will visit musing and read some interesting questions and answers and walk away. This really attracts people.

There have been lots of question and answer discussions all over the internet. That is the reason why platforms like Quora and StackOverflow are getting good traffics every day. Musing is a question and answer platform powered by a blockchain which is going to be the future. There is a great potential for it to take over the existing Q&A platforms.

In a philosophical and phycological perspective, humans will always have questions and the number of questions they are going to ask is going to definitely increase in the near future. Musing will be able to help them get answers for their questions.