Why are structs stored on the stack while classes get stored on the heap(.NET)?

Question

I know that one of the differences between classes and structs is that struct instances get stored on stack and class instances(objects) are stored on the heap.

Sinc

Answer 1

Every process has a data block consists of two different allocatable memory segment. These are stack and heap. Stack is mostly serving as the program flow manager and saves local variables, parameters and returning pointers (in a case of returning from the current working function).

Classes are very complex and mostly very large types compared to value types like structs (or basic types -- ints, chars, etc.) Since stack allocation should be specialized on the efficiency of program flow, it is not serving an optimal environment to keep large objects.

Therefore, to greet both of the expectations, this seperated architecture came along.