What is your favorite Key/Note?

What is your favorite key/Note? or really,  When you think of a melody, What key is it normally in?

I came across this about a month ago where I noticed most of my music was in the key of D, and when I thought of a melody it was also in D; even though now there's a bit of B mixed in.

It's just sort of a simple question, and I really want to see what others have to say about it!

I've noticed that for Christmas music (yes - it's that time of year and I've already written a piece for the season!) I always tend to write in the key of Eb major for some reason.  It also happens to be the key of my favorite Beethoven Symphony - No. 3.  Perhaps it's because of that symphony that people ordinarily think of that key as "heroic" but I think of it more as a warm key.  I also prefer flat keys, even if it causes way more flats in the key signature than is practical.  For example - I prefer Ab minor or Eb minor to G# or D# minor.  I'll just use the Ab major and Eb major key signatures and write extra accidentals for the notes I need to make it minor.  Interesting topic!