Now I understand some other airlines have better offerings than BA, and if you fly first class (I think for the same flight it was roughly 8x more) it's going to be a different story, but at the end of the day you are still just flying A to B.
The best part was probably the lounge where I had the connection, but I only had 1 1/2 hours so didn't get to experience it much. However it wasn't really much more than a 4* hotel buffet.
If I could afford to drop $20k to fly first class whenever I feel like it, would I? Probably. Do I feel like I'm missing out on anything by not doing that? Nope.
How much more is it to fly in a private jet? I feel that would be a different story, given you can schedule it so it picks you up whenever is convenient for you.