“I haven’t been this unstable in seven, eight years,” he told the Chicago Tribune. “The band coming to an end is a very stressful idea to me. I know it’s the right thing, but I’m wondering what it means.”

The band is calling it quits 13 years after debuting in a Windy City bar.

Corgan said he will take time off to “create a little bit of space between me and what people think of me.”

“I want to be sure if I play music again that I’m really confident about what I’m doing,” he said. “Because whatever I do first, that’s what I’m going to be labeled as.”

The sold-out final shows are some of the most sought-after tickets on the Internet. A pair of tickets for the November 29 United Center concert was offered on the Internet auction site eBay for nearly $700, and a posting on the band’s fan-club site asked $1,000 for one ticket for the December 2 Metro finale.

The group’s half-dozen albums have sold more than 22 million copies worldwide.