the creation process and parts structure of a song can much more be achieved using & recording with multiple tracks, to make the song exactly how YOU want arrangement wise ........
this is the preference of so many musicians worldwide,.....that's where the divide will always be ......workstation/synth vs automatic pre established arranger style play which in itself is a form of SMF.
many don't ant to hear that or do they have the talent to create from scratch but it is what it is...glad we all have choices to make music in any way we desire ..