Also me when I was young. The only downside was a more realistic (not mature) view of the world. This has lead men to not doing things that would have been mistakes easily forgiven at that age. My real life was a bit boring (I’d carefully select friends, keeping myself out of troubles) because my imaginary life was exciting enough). Apart from the knowledge I acquired, the upside is that I can keep track of a lot of abstractions needed for problem solving.