Interviewer: This kind of inspired ridiculousness has made Doctor Who a huge hit worldwide, though the most rabid fans, known as "Whovians", are generally found in the UK. Many seem to be nerds of the highest order, spending half their lives on Doctor Who internet sites discussing interplanetary lore, monster genealogy, tardis mechanics and so forth.
DT: "Well, it becomes a hobby, doesn't it?" Tennant says. "I think that's OK. I think Doctor Who fans are somewhat unfairly judged, like what they're doing is socially unacceptable. It's entirely harmless. At least they're not going out raping or murdering people. And it's a fantastic world to lose yourself in, which is probably why it has survived so long.
David also says this, which I found to be really adorable:
Yes, well, I'm having the time of my life. I'm very content at the moment. The public appreciate me, I love my work, and here I am on my day off, sitting in sunny London in the middle of summer, overlooking the West End from my agent's very posh office. Life, as they say, is sweet."