Would you try to draft a song in a music notation software (like Sibelius, Finale, Musescore, etc.)?
no. if i'm writing notation i prefer handwritten. if i have a computer i'll just record a demo. if i have a computer and no instrument, i'll use a graphics tablet to write notation. if i have a computer and no graphics tablet and no instrument, i'll record it vocally and try my best to explain all harmonic information. if i have a computer with no graphics tablet and can't record audio, then i'll use text and use numbers for melody, more numbers for rhythm, and more numbers for chords. that is worst case, but it does work