Part of the fun of watching a tv show for me, is getting involved with fandom discussions on a show that I love. But then it's all "Rusty must burn in hell", and every entry in three being about woe over the new companion, and it's not so fun any more :/

And season 3 was amazing (sooooo slashy with the Doctor and the Master), that you should totally get to watch it if you have the chance!