Is it better to go to a concert alone or with friends? (Tom Petty and the Heartbreakers)

Anyone out there planning to see the awesome band Tom Petty and the Heartbreakers @ Madison Square Garden?

What's your opinion: Is it better to go to a concert alone or with friends?

I normally would go alone but not because I'm a loner or something but because none of my friends share my taste of music. But then I think it would be fun to go with a friend. At least when I'm alone I don't have to worry about anything but just myself. One problem with being with someone else is that I have to buy for his or her ticket, I can barely afford one ticket so how much more if I got a buddy or two not unless that friend is willing to buy his or her own ticket. And that's why I'm thankful sometimes that no friend of mine shares my interest in music. But then again, it's kind of sad having no one there to share the adrenaline rush and the sound of live music and just have fun. I've only been to one concert by myself so I wouldn't really know.

What do you think?