C# Enums with Flags Attribute

Question

I was wondering if Enums with Flag attribute are mostly used for Bitwise operations why not the compilers autogenerate the values if the enum values as not defined.

For eg.

[Flags]
public enum MyColor
{
    Yellow = 1,
    Green = 2,
    Red = 4,
    Blue = 8
}

It would be helpful if the values 1,2,4,8 are autogenerated if they are not assigned. Would like to know your thoughts on this.

Answer 1

This is a little easier:

[Flags]
public enum MyColor
{
    Yellow = 1<<0,
    Green = 1<<1,
    Red = 1<<2,
    Blue = 1<<3
}

Answer 2

They probably could, but with a compiler of this size they have to take into consideration the time and resources required to implement something vs the potential benefit, especially with syntactic sugar like this. And it is just syntactic sugar because you can write it manually.