sometimes when I watch videos like this about Shinobu, I get the idea that Wisteria poison is like a drug. The drug is harmful to a person's health, and greatly affects a person's mind and behavior... which is similar to Kocho's situation. Also, the drug slowly kills a person, and a person can start taking the drug after something terrible has happened in his life, and the person does not see the point in continuing life, but committing suicide would be too strong a turn (sorry, this all just reminds me of Shinobu :< )
