If I could give the BBC a massive hug - everyone that works there in one go - I would. The shows are of a better quality than Channel 4 or ITV generally. While there are things on the others I do like (Misfits, The Gadget Show and The IT Crowd) they seem to be carrying the entire appeal.
Meanwhile, BBC seems to know what people will like: Quality. Life On Mars is mesmerising, QI is a great way of learning things to talk about around a water cooler, That Mitchell and Web Look is inventive and original while still being hilarious, Doctor Who is great (still!), Sherlock turned out to be an interesting reinvention of the great detective, Mongrels seems to be a cross between The Muppets and Family Guy but is worth looking at if you don't mind your comedy mostly heartless and the BBC has given us Bottom, The Young Ones, Blackadder, Faulty Towers, Monty Python's Flying Circus, The Men Who Stare At Goats, Top Of The Pops, Charlie Brooker's Screen/News/Gameswipe and Ashes To Ashes, to name but only the ones that come to my head. To carry on getting shows like these at this quality, I'd pay. I'd wish the Monsters in Doctor Who would look a little more realistic but I'd still pay.
Leave 'em alone! They do good work.