My thoughts on the water infiltration were these:

- I don't ride in the rain deliberately, so what are the chances that enough water will find its way inside my bottom bracket during the few times I actually ride in the rain to cause damage, which would mean that the waterproof marine grease I used has been washed away (that would take a lot of rain riding).

-There is nothing preventing water from entering the outside of the bottom brackets, so why protect the inside?

-Just seemed to me that the platic tube was more for mountain bikes than road bikes.

-On a road bike, the plastic tube seemed like it would just trap heat and dust.

But, am I wrong about any of this? If I get caught in the rain, am I destroying my bearings?