please, this is my personal opinion and will prob be flamed as a 'square pious old nun' for this ! but torchwood was literally RTD up his own arse. literally.
it was 'oh Im RTD, Im gay, im gay, and love a hedonistic life,and im atheist,and i love to announce it every day, and Im so cool as i like to show all this and more in torchwood, how cool am I?'(andthis was someone else who said it first and i agreed)
and Im not anti-gay before I get flamed, i just found it completely over the top and an excuse for shagging/violence et al, and the 'stories' (apart from the cyberwoman one) were just there as fillers for all the rets of it. i hope DC whos a massive whovian like me, doesnt EVER watch it.
and ok adults may have liked it but i didnt think it was right to take a childrens/family show character and make a bit too adult viewing version of it knowing that the kiddies would want to watch 'captain jack'.
im sounding so Mary Whitehouse, i just personally thought it was wrong. and maybe sarah jane adventures was the complete opposite as it WAS for the the children, but that was something they could watch along with doctor who. and it wasnt too twee and 'cbeebies' IYKWIM.
OP is your child too 'cool' for SJA? cos that would be better? but as other posters have said it maybe depends on their level of maturity?