I didn't mean to question your troubleshooting skills. Just remember, as we attempt to help you troubleshoot through a medium like this forum, all we have to go on is what you post. When you state that you "tried clearing cache etc," we have no way to know what "etc" covers, so the safest course is to double-check on what exactly you've tried.
As to your question "how is anyome [sic] in broadcast able to deliver any content if this is how bad it is," the answer is simple: the issues you're hitting are not endemic or even common. That doesn't make them any less crippling for you, but it's not safe to generalize from your experience that every Premiere user is having similar issues. Furthermore, the fact that this forum is full of reports of problems is not a fair representation of the experience of the whole population of Premiere Pro users, just as the health of people polled in the waiting room in a hospital is not representative of the rest of the community. Put it this way, when was the last time you went to a forum (for any app) to report that it's behaving perfectly?
So the challenge is to determine the cause of the problem(s) in your case. Have you contacted our technical support about the crashes you're experiencing?