It's sort of a timing thing, but it more specifically relates to two things.
1.) when I feel the line is done, which is sort of a wishy-washy sort of reason, but is linked to my gut feeling, which is also how I write.
2.) similar phrases are sometimes linked similarly. If you notice, every time the phrase
It has always taken more
energy to create than it has
comes up, it is written with the exact same words, and written with the exact same line breaks. It's a structurally important phrase, and making it look the exact same way each time is a way of pointing that out.