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Yes musing was very much helpful to me in number of ways. Such as:-

Sharing knowledge is always good even it increases your own knowledge.

It enables to broaden my vision and I can get different point of view for a single problem/ question.

It also enable me to get some earning while sharing my knowledge.

It also allows me to ask question and clear my doubts.

Now a days he activity on musing has been very limited and it is loosing the interest of many people.