I said at the beginning of this fic that there would be one chapter per Doctor. Well, that's changed. There are a couple of ideas, such as this one, that apply to all Doctors. So more chapters for you!
After coming into the company of a young woman named Lucy, he decided that having someone to back him up and help him in his rise to power wasn't such a bad idea. If he could convince her to join him, he would have even more influence.
The sex wasn't bad either.
But what he liked most about Lucy was her loyalty. Though he'd known her only for a short time, he knew she would follow him to the end of the Earth (and, should his plan be successful, that would most likely be the case). She helped him get out of tight spots and she held him when he'd had a hard day. She asked him questions, and he enjoyed explaining new concepts and ideas to her. There were times when he felt truly content, knowing that there was something he had with Lucy that he just couldn't get through an alliance with the Daleks or the enslavement of the Ogrons.
He had companionship.
Not really that funny, but I thought it was interesting that this incarnation was willing to have what he called his "faithful companion".
For the New Whovians - Yes, the Master has worked with the Daleks before. And Ogrons are primitive ape-like creatures that have worked for both the Daleks and the Master.