Eli5 why does the US still use a bomber from the 1950s when they have built two newer ones since then?

Question

Eli5 why does the US still use a bomber from the 1950s when they have built two newer ones since then?

In: 7

Answer 1

Answer: Convenience, lack of actual war time use for the new stuff, (helps save funds on resources for new stuff in case the military has to actually use it) and, the most controversial fact: Profit