As i mentioned, there are MILLIONS of examples produced and there are some 60 different users. how may else you want?
The Javelin is same
The NEXT GENERATION American weapons in development is also disposable
The British MBT-LAW
The top notch German Panzerfaust-3
What more are you looking for?
You seriously think that all these systems are not worth it because you do not like them and they countries were stupid that they went for them?
Still not looking that JUST MAY BE there is a possibility that these countries were not idiots after all and there is certain advantages these systems offer that you didn't though of!! Dont you feel that those things will be interesting for you to learn too? are you interested in that part at all?
Can you please think once, for a change, that what may be the advantages you will realize the reason why all the people are going for disposable system these days. Please think about this alone and you will get the answer to your LOC question, if not i will explain about it but at least think for a moment that may be the system is not that bad only because you do not LIKE it and may be there is some sensible explanation why all those idiot countries are option g for such systems.