Bcz if you want to achive your aimes, you've got to get tierd!!
That's why, everyone wants to live in heaven! I guess that's the reason of using a stairway..
I really dunno what I'm saying!!
Everyone has his /her own highway, and when some of us go to hell we do it in style like in fancy car, new clothes and a big smile. Purgatory have you notice that some who go to hell are smiling while those who go to heaven are not? why is that? The highway has no tricks, no curves it's simple and plain and points to one direction, there's no rules no restrictions, it's the nature of humans to choose simplicity and in this particular matter it will be their downfall, Purgatory what's your highway like?
I would anticipate what's behind the stairway's door more than the highway's dead end. When your sins vs. good deeds are calculated, being shot to hell on the highway reflects the rapidity of your own life when you were "living easy, living free." However if you did follow the piper and lived a humane life guided my reason, I think a glitzy, golden stairway does the trick better than the cold,dirty pavement.