The heat doesn't bother me, the afternoon torrential storms do. I'm not against riding in the rain, I just hate the clean-up and the accelerated rust/corrosion it puts on my baby despite the clean-up.
If I had a bike that I didn't care about (as far as appearance and such), then I would be riding every day.
In fact, as soon as my Hodaka gets the engine back from the re-builder and I get it wired, I'm gonna be riding it every single day, with the Honda reserved for good weather.