I've been to some concerts in the past, but never to one that I was really looking forward to.
And I wasn't even there for U2. I was there for the opening act: MUSE, a UK alternative rock band.
I heard them for the first time when I was abroad in France in 2006-07. I fell in love with them and have been listening to their music religiously. It's unfortunate that they are not mainstream in the US; however they do really well in Europe. They sell out for concerts in Paris and Germany, as well as in England.