Rain and road bikes

[Kiwi Stoker]

Also tyres are softer in the wet so will puncture more easily, especially if there's glass on the road.

[TigerMom]

I would never willingly ride a road bike on the road even if it is drizzling.

Have I had to ride while it was raining, yes, due to sudden, unexpected rain showers.

The turns and the braking on wet roads (especially if there is a downhill), even when there is only a slight drizzle is too dangerous in my opinion. I can't speak for cyclocross bikes though.