My view is that we need to see the BBC as more than just a means of showing TV programmes- there is so much more to it. It would be easy to underestimate how important it is to have politically neutral news reporting- look at countries where most of the newspapers and TV channels are owned by one man, who is an allegedly corrupt politician. In the UK, we came incredibly close to having an enormous chunk of newspaper and TV media owned by one corporation- a company whose senior officials are currently under investigation for repeatedly breaking the law and conducting a wholesale cover up, allegedly putting undue pressure on politicians all the while.
The BBC produces a huge amount of educational programming- resources that are required to show a balance of viewpoints, available to children and adults. Given the increasing influence on our schools of religious groups (and other groups with particular agendas), I value the independence the BBC has (and I fear that the government will try to remove this).
The World service is regarded as being hugely beneficial in terms of international relations, and is seen by many as a great diplomatic asset.
The quality of programming that the BBC is able to produce, in the knowledge that it has this revenue stream, means that its programmes and services can be sold on across the world, making lots of money back.
Back to the adverts- I hate adverts. I won't listen to radio stations with adverts. I don't even think the BBC should be allowed to trail other BBC stations and programmes. I'm happy to pay the licence fee to avoid adverts.
I see it a little bit like the postal service- it's a vital service that is of benefit to the whole country, and it shouldn't be just a money-making, advertiser and profit driven operation. It means that niche markets can be served, such as non-English language broadcasts. Programmes don't have to be appealing the the mass-markets and advertisers to be culturally valuable.
Finally, you are not forced to pay the TV licence. If you do not watch TV broadcasts at the time of broadcast, and can demonstrate this, then you don't have to have a licence. There are plenty of ways of watch later via internet etc.