Hi! basically you don't really need bumpers most of the time, but they can be used for a variety of things, like gaining speed, jumping higher or even preventing yourself from falling. I thought it was cool to design them so they could be used in different ways, like this, you can always find faster ways to progress and they can also help you get past certain parts of a level more easily depending on the context. What I usually do is throw a bumper onto the ground in the direction I want to go and then dash onto it, So… i guess you're already using them right X)
Appreciate your comment!