Code Generators or T4 Templates, are they really evil?

Question

I have heard people state that Code Generators and T4 templates should not be used. The logic behind that is that if you are generating code with a generator then there is a bet

Answer 1

quote: I have not really found effective ways to build templates that can say for instance instantiate themselves. In otherwords I can never do :

return new T();

public abstract class MehBase
    where TSelf : MehBase, new()
{
    public static TSelf CreateOne()
    {
        return new TSelf();
    }
}

public class Meh : MehBase, TParam1, TParam2>
{
    public void Proof()
    {
        Meh instanceOfSelf1 = Meh.CreateOne();
        Meh instanceOfSelf2 = Meh.CreateOne();
    }
}