Should history be fictional?

Hello,

It seems to me that the most important aspect of history is what lessons can be learned from it. But can't lessons be learned from fiction, as well? Such as comics, legends, movies, etc. To what extent does it matter if we agree that historical events happened, as long as we are learning from them?

I didn't find the right solution from the internet.
References:
http://www.thehistoryforum.com/forum/viewtopic.php?f=86&t=30034
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