In many ways, a sex scene can be seen as a lazy arc to throw two (or more) characters together. It is a band aid on what cn otherwise be a more emotional and observational relationship between characters. In fact, I'd personally go as far as to say most sex scenes in literature happen because...
I'm in the middle of the road on this one. I see no reason for putting them in, except for one reason. If they are important to the plot, they need to be in, if not, do not.
To be honest, if a sex scene cannot be truly justified in both the scope of the writer and the reader, either leave it...
I've watched a few stories from the first series. By all means, they seem a little outdated now, but they're still fun to watch. If you're expecting any kind of romance with the Doctor and his companions, you're in for a disappointment.
Personally, my favorite was the fourth doctor, Tom Baker :D
I'm suprised nobody said a pen!
I think I'd much prefer something low key, a poison needle perhaps. Why spend time in wars when you can win politics in a single, sneaky stroke? :p
While I can only speak for myself on the matter (I have no intention of placing words in someones mouth), I can say that I don't mind questions that have spawned from curiosity. By all means, there are polite questions and rude questions, but mostly questions come down to a matter of context and...
I have written three endings to my story (before I have written the full story!) One of those endings, involves killing off the MC. I admit, it is by no stretch of the imagination, an easy choice. However, It does serve its purpose. In the simplest form, it reminds the readers that the MC is not...