In some languages, saying 'I' out loud can sound needlessly pushy
In Spanish, Italian, Japanese and roughly half the world's languages, a sentence can drop its subject pronoun entirely, since the verb's own ending already signals who's doing the action. Spanish 'hablo' already means 'I speak' on its own; adding 'yo hablo' can sound overly emphatic, like stressing the word 'I'. English forces a subject into almost every sentence because its verbs carry so little information alone, part of why pronoun-dropping translations from these languages can sound clipped.