How to replace for-loops with a functional statement in C#?

Question

A colleague once said that God is killing a kitten every time I write a for-loop.

When asked how to avoid for-loops, his answer was to use a functional language. However

Answer 1

A simple (and pointless really) example:

Loop

// mystrings is a string array
List myList = new List();
foreach(string s in mystrings)
{
    if(s.Length > 5)
    {
        myList.add(s);
    }
}

Linq

// mystrings is a string array
List myList = mystrings.Where(t => t.Length > 5).ToList();

In my book, the second one looks a lot tidier and simpler, though there's nothing wrong with the first one.