I don't watch live TV on principle because I hate the licensing people and I don't want to support them financially or otherwise. They are a bunch of bullies who I'm sure have bullied lots of people into paying for a service they don't actually use.
If you watch live TV, you should pay for your licence (under the current model). If you don't (and yes, I know this also extends to iPlayer on catch up), you shouldn't have to, and you shouldn't be bullied into thinking you should. The letters they send out speculatively are disgusting, and a waste of trees.
I also don't think you should have to give your personal details to a service provider you don't actually use, just to prove you don't want to use it.
The biggest reform required is in how payment is collected. If the licensing people were held to account and made to operate like a normal business, I might take out a subscription to watch BBC programmes. Until/unless that happens, I won't support them.