Why are poetic biographies considered more suitable for spiritual practices like Parayans and Saptahs than prose biographies?

The preface in Chapter 0 explains that poetic biographies are considered most suitable for spiritual practices like study, recitation, Parayans, and Saptahs for several practical reasons. The primary reason given is that poetry is memorized quickly and easily, stays in the memory, and can be recalled in time when needed. In contrast, prose is described as being difficult to memorize. This preference for verse is so strong that the text notes there is no tradition of performing Parayans or Saptahs of prose biographies. This practical advantage is suggested as the reason why much of the ancient Sanskrit literature is composed in verse, making it the ideal format for Guru service through study and recitation.