U2 No Line On The Horizon

I gotta be honest here. This one didn't do it for me. I'm a casual (not rabid) U2 fan. I really liked the A-bomb album. A friend of mine who also likes U2 got this album from another guy who wasn't impressed. He listened to it twice and gave it to me. I listened to it twice and wasn't impressed. I gave it to my brother in law who is a big U2 fan. He listened to it twice. There just isn't much to get excited about. Is it mature songwriting? Certainly. Is it interesting? Not really.