Why would you consider that an "ideal scenario", @Value_Web_Guide? Ideal for whom?
As already mentioned, visitors arriving at a page and leaving again without visiting any other may be doing so because they've already found exactly what they wanted and have no need to visit another page. For them, that is an ideal situation.
As I tried to explain earlier, you can't read too much into bounce rate on its own; you need to look at it in context, and in the light of other information about your site. There is no "perfect" bounce rate that would apply to every site.