The reason I asked is that I don't understand what you're saying in the original post.

If you mean that we're not giving enough antibiotics to people with stomach problems, well, that's why I answered that we are currently giving enough antibiotics to people with stomach problems - in particular, we're giving them two antibiotics plus a proton pump inhibitor, which is clinically demonstrated to be enough to get rid of h. pylori.

If you mean we should be giving antibiotics for diseases that aren't currently believed to be caused by bacteria, on the off chance that they will turn out to in fact be caused by bacteria like stomach ulcers were, it doesn't really work like that. There are dozens of antibiotics, many of which are specifically targeted at specific bacteria. If we don't know what bacteria are causing a disease, we can't target it with antibiotics except by giving the patient one of everything, which is a good way to kill them. This is ignoring the economic implications of giving drugs that can cost up to thousands of dollars per regimen for conditions that we have no reason to think they'd help for, the ethical issues in giving drugs with side effects up to and including death when they might not be necessary, and the medical issues involved in helping bacteria build up antibiotic immunity.

If I'm misunderstanding you, you're going to have to explain what was in your post above better.