I don't get classical music. Chamber music? Yes. Organ music? Yes. Classical guitar? Totally. One person conducting a bunch of folks through a long piece without a word? Nope. I've tried, but I just feel like I'm listening to autocracy and hegemony. This overbearing mofo is waving a tiny dick at a bunch of skilled people and gets to yell at them. They're wearing black tie. It's uptight out to hell.
Have you tried some neo-classical/post-classical? Basically modern composers doing some wonderful things, and I tend to find it personally much more compelling than classical itself. Check out Olafur Arnalds and Luke Howard and oh boy, Jherek Bischoff for something a bit different.
I like classical music but there are many genres I find to be more compelling. However, I'm a huge fan of neo-classical music. The examples you posted were excellent. I loved every single second. Having said the above I must admit that I can listen to all three movements of Moonlight Sonata everyday. To me, that is the epitome of classical music and I wish more composers would have taken that route towards classical composition.
There are some really good alternative composers out there, too. I'm no expert but I have a friend who is, I'll ask him for some recommendations and post them. I quite like Debussy but he's still quite classical. Schoenberg is really cool, too - he developed the twelve tone method, in which the composition plays through the twelve musical tones, never repeating a tone until it's played all twelve.