Yeah I think at the start there is a lot of value in just starting, perhaps without even finishing. It's that stage of just getting over the first hurdle and getting into it.
That's fine for a while but then as you say you get to the place where you have to finish. I think this can be almost as big of a hurdle as starting as it can involve a whole host of new challenges, some of which you've mentioned above.
Finishing is also, in my opinion, typically not as exciting. You've likely already solved all the intersting problems and are left with the "lesser" tasks involved in getting it over the line. This is something I've been learning myself over the past year or two.
That's fine for a while but then as you say you get to the place where you have to finish. I think this can be almost as big of a hurdle as starting as it can involve a whole host of new challenges, some of which you've mentioned above.
Finishing is also, in my opinion, typically not as exciting. You've likely already solved all the intersting problems and are left with the "lesser" tasks involved in getting it over the line. This is something I've been learning myself over the past year or two.