>>45918060Serious answer: Stages can be revisited and the early stages can net you dozens of lines in a short amount of time if you're good enough. A few sparse levels in the later stages have easy bonus rounds too for when the player is stranded.
This adds a secondary layer of the gameplay to managing how many lives you have and surviving long enough to regain access to world 1-1 and looping through reliable bonus stages which also mentally refreshes the player for whatever trap they were stuck on before.
ironically, savescumming makes it more likely for the player to get stuck in a rut and give up.