I loved his aversion to domesticity, and his bafflement at and admiration for the human race, his sense of duty and his commitment to the principles of time and space and truth and right and his tireless efforts to keep the world, the earth, the universe and every living thing in it (or every living thing that wasn't a Dalek), alive.
I loved Nine, and I loved the portrayal of him by Christopher Eccleston. A finer actor never breathed life into this Time Lord of ours.
I cried when he gave his life to save Rose's, and even though I hated him for leaving us, I loved him for the nobility of his action; for the unselfish, unending love it expressed. But when the regeneration came to a close and Ten emerged, flashing a huge smile at Rose and saying "Where was I?", I took an instant dislike to him.
For weeks, I couldn't believe that I would ever truly forgive Ten for taking over from Nine. I swore that Nine would be my Doctor forever and ever. I could see myself accepting Ten only because I knew we would never again see Nine return, and I've come to be of the opinion that any Doctor is better than no Doctor at all.
Then there was the 2 minute Glastonbury interview with geek!David, and the first chink started to appear in my armour. Recently, there have been the publicity shots and press releases focusing on the new Doctor's wardrobe...which I didn't really care for in the beginning as it seemed to me to be regressing a bit to the silly suited Doctors of the 80s and 90s (Five, Six, Seven and Eight -- I never saw One, Two or Three in action; and Four I loved because he was the Doctor I grew up with, and loving Four meant loving his attire, too). But I've since had a closer look and it's not that bad, really...
But it wasn't until I saw the pictures taken at yesterday's Christmas Invasion shoot in Camberwell that I finally thawed towards Ten. Look! him and Rose -- they're holding hands...awww. How cute, heart-warming, and uplifting is that? He may just prove to be a worthy successor to Nine, after all.