Why aren't there macros in C#?

When learning C# for the first time, I was astonished that they had no support for macros in the same capacity that exists in C/C++. I realize that the #define keyword exists in C#, but it is greatly lacking compared to what I grew to love in C/C++. Does anyone know why real macros are missing from C#?

I apologize if this question is already asked in some form or another - I promise I spent a solid 5 minutes looking for duplicates before posting.