Phily B said:
I didn't know people liked Doctor Who a lot, I always thought it was just . It seems like it's just geared towards kids, it just doesn't interest me at all. All the DW advertisements come on when kids are watching, DW spin off shows are on CBBC, all interviews on Newsround etc
You can't view Who in the same light as a more "serious" SF show. It's not trying to be realistic or even plausible in the strictest sense; it's just a really fun show about a genius who defeats monsters, aliens, and other bad guys.
I suppose you could think of it as a somewhat less character-dynamic-focused, time-traveling version of Buffy the Vampire Slayer. It's got a rather similar sense of humor.
And yes, it's designed to be accessible to kids. One of the best things about Doctor Who is that it's really one of the few shows that can be appreciated (on various levels) by all ages.
If you want a good look at what sort of thing it tries to do, watch next
Friday's episode, "Blink". (This Friday's is also good, but it's the second half of a two-parter. Not the best first look.) "Blink", by contrast, is not only a modern SF classic already----it's about as standalone as you can possibly get, story-wise, not even featuring the main characters all that heavily.
I'm assuming you're in the US, here.