Why is it call a statement of purpose when:
1. You need to write quite a few paragraphs
2. You need to write about more than just your purpose but also your experience, strength, weaknesses, blah blah blah.
Anyway, I'm thankful that I'm on version 5.4 of my SOP. I don't think I will polish it or change it anymore, unless it is absolutely necessary. I have accepted the fact that there is no PERFECT SOP. I think I have presented a holistic picture of myself as a PhD candidate as best as I can in this version.
However, I will still need to adapt it for the various schools' requirements.