Change the vector to std::list and you loose the [i] operator. Now how would you rather iterate that? 5 lines of begin() end() *it++, or a 2-liner foreach. We

Change the vector to std::list and you loose the [i] operator. Now how would you rather iterate that? 5 lines of begin() end() *it++, or a 2-liner foreach. We haven't even brought const- and reference-correctness into the picture here. That makes the number of potential errors in the it-example even worse. There are also iterators where the size is not known up front, streaming input for example. The point is, some features in a language can reduce complexity and improve readability (like foreach) while others can increase it (move assignment constructors?). This is only looking at it from a developers point of view though, compiler authors might disagree.