User blog comment:Mathmagician/Wall of Flesh Solo Guide/@comment-79.71.114.213-20111220132304/@comment-4674838-20111220191834

If you make one little mistake with a gravitation potion and get caught by a building or something, you could take a ton of damage. The bridge eliminates any possibility for error in that respect. Again, I want to go with the safe option, not the fast one. If you want to go with the fast one, that's up to you =)