Personally I think YABU, OP. I'm sorry, I haven't read the whole thread so I am just replying direct to you.
I have worked for the BBC (I don't now) and a good number of the commercial broadcasters/media during my career (I still work for some of them). Being the public service broadcaster is extremely important in my view, regardless of opinions on what shows or services people like or use. Because that is very subjective.
The BBC makes mistakes (Savile etc) like any big organisation. It still employs humans, after all. But in general, it is very open. When it turned out the BBC had fucked up its news reporting, the top guy took the fall. He HAD to. That is the BBC culture. I even know what the new DG earns because it was disclosed on his appointment.
This month, James Murdoch was re-elected to the BSkyB board despite the phone hacking scandal and the frankly enormous contradictions in his accounts of what he knew. He doesn't have to take the fall. It's a commercial broadcaster with a commercial culture.
Is the BBC about "middle class Blue Peter"? I don't think so. It is usually the first to try to create new services, appealing to audiences that are ignored by commercial businesses because they are too niche to be profitable. I'm thinking of things like the Asian Network, 6 Music.....some work, some don't. But without the BBC, there would be no attempts to do this as the profits wouldn't make it viable.
I don't like paying the licence fee particularly with so many other costs in my life but it is very important to me that we have a public sector broadcaster without a commercial agenda. When something goes wrong (like Savile/Newsnight), the BBC is forced to report on itself and open that up to the world. Commercial organisations have no such imperative to damage their own brands.
Anyway, these are my views as someone who has worked for the BBC and the commercial alternatives. I've experienced those cultures and I know what happens inside the BBC and those other employers. So that's my view.