Is it worth it to go to a concert?

I mean, someone will just load it to youtube the next day, right? I really wanted to go to David Archuleta's concert in KL, Malaysia...but I was like, "I'm not 'crazy' for him"..But then again, I would LOVE to see how a concert would be like since I've never been to one. The tickets are quite expensive too...and maybe the concert might be a bit far from where I live. Is it really worth it?