Finally someone who understands this! All modern weapons are no doubt very effective, but they are also very complex ,take long time to build, need specialized

Finally someone who understands this! All modern weapons are no doubt very effective, but they are also very complex ,take long time to build, need specialized factories and skilled workers and the result is that there aren't that many stockpiled. Because that's not only expensive, weapons also deteriorate and might malfunction if stored for extended period of time. Most of the fancy toys would run out after 1st month of actual war (assuming non-nuclear conflict, of course).