There are a lot of people who don't understand or even hate the idea of closed species. This journal should bring you closer to my view of closed species and why certain things are handled the way they are.
Maybe you just had the wrong image of "closed" species?
Update May, 2017: I'm honestly super amazed by how many people viewed this already and how many of you found this helpful, so I spent some time on redoing the entire layout to make it easier to read! ;w;
These are just my personal experiences and opinions, they don't apply to everyone and are surely not flawless. I really took my time to think this through. English is my 3rd language so excuse me for any grammar, spelling or wording mistakes.