I ride strictly for fun so I don't intentionally ride in the rain. But in the heat of summer on the gulf coast you can never predict the pop up thunderstorms so I inevitably get caught in some very heavy rain. Sometimes blindingly heavy.
The roads tend to puddle heavily toward the right edge so you have to ride in the center of the lane. Hope the rain didn't short the tail light out. Fortunately, there's not much traffic on the roads I ride. Unfortunately, that means what traffic there is does not expect anything to be in front of them.
And I worry that such a soaking isn't necessarily good for a 40 year old machine.
Aside from those concerns, I really enjoy it. You're as wet as you can possibly get within the first minute and after that who cares. I'd much rather have that than riding on wet roads and slowly getting wetter and wetter from the filthy spray. Wouldn't want to do it all the time, but when I do get caught I do think it's fun. Of course it's warm and usually not more than 15 or 20 minutes at most, so it's easy to take it as a lark rather than a major inconvenience.