I'm in a bit of a dilemma at the moment. One reason I'm not getting on with writing my current science fiction story is that I can't decide whether to write in the first person or in the third.
For sheer fun in writing, you can't beat first person. I can get into the story as the Main Character (MC) and just romp along. The problem is that the story isn't terribly easy for anyone else to follow. Too many of the details that the reader needs to know wouldn't be in the mind of the MC.
When I write in the third person, it's easier to follow but harder to write. So I suppose it comes down to the question of "Who am I writing for?" If I ever want anyone else to read what I write, and I do, I think maybe I need to take the harder path. Either that, or write the whole thing out as it comes and then go back and third-person it.