If these spaceships are going faster than the speed of light, then presumably they're moving faster than it would take them to see upcoming stars.
So how come they never run into one?
Warp speed is supposed to be like ftl right?
They steer around them?
Now, to the really important question: Why don't they crash in lone hydrogen atoms that would possess like infinite kinetic energy or something?
That's what the deflector dish is for.