Going back to the .5%, the most optimistic of the percentages. That means this is between about 100-500 times as deadly as H1N1. Please stop putting these two diseases in the same sentence. They are not the same.
If you choose to extrapolate the death rate being lower, that also means this virus is way more contagious than the numbers show. That in and of itself is a reason to be concerned too.
Art I get where you're coming from there... I've even had that thought momentarily myself about getting it over with. We will all most likely get this virus at some point in the next twelve months before a vaccine is produced. The point where I caution this thinking is that A) about 5% of patients have serious ICU level complications, and B) 10-20% end up at least hospitalized in most studies that have been peer reviewed.
More importantly that particular risk may not do us any good if the immune system doesn't actual retain immunity to this virus. I find it very concerning that the WHO felt the need to clarify that there is no proof yet that you do build an immunity. You may... but there are plenty of other bugs that you can get again over and over. If this turns out to be that way it's also going to complicate vaccines I would guess.