Tom Baker was very emotional, and as far as I can remember there has nearly always been some form of attraction between Doctors and female assistants. Young people today are so much more wordly wise - my daughter adores David Tennant (she's 12), she would quite like to marry him! I am sure Tom Baker was seen as a sex symbol by many of the older female viewers. I mean, look at Leila - she was always half dressed! I'm sure a lot of dads watched Dr Who just to see her. Years ago there was a definite line between children's and adult TV - childrens' shows were just not made to be sexy, it was probably only when The Monkeys arrived on the scene that children's TV began to openly attract young female viewers. Nowadays, most young people are glued to the soaps, from the age of about 10 or 11, mostly for the love story lines, hence there being so many more young actors in them all now. There were hardly any youngsters years ago, and if there were, they never got their own storylines.
Anyhow, that's getting off the point. I think some children are still scared of Dr Who - but they spend so much time playing very scary computer games, and watching other scary shows - like Harry Potter - it all depends upon the demeanour of the child. Also, children are far more sophisticated and knowledgeable these days, far more grown up at 10, 11 or 12 than I was at 14, 15 and 16. I work in a secondary school and can see no comparison whatsoever to students now, compared to when I was at school, they are mostly adult (or think they are) at around 11 or 12!
Dr Who is aimed at a much wider audience these days, it is not made as a children's programme, hence the love story line. Still think it's a fab show.