Conversation so far:
When was the Grandaddy reunion set to begin?
In March 2012, it was announced that Grandaddy had reformed and were to play a limited number of shows
Where were tGrandaddy going to play for their reunion?
Grandaddy played in London on September 4, headlining the End of the Road Festival in the UK
Did Grandaddy play other venues besides London on September 4, and headlining the End of the Road Festival in the UK as well?
Grandaddy also played San Francisco's Outside Lands Music and Arts Festival and Paris's Rock en Seine Festival in August 2012.
Did Grandaddy enjoy playing together again during their reunion?
Lytle from Grandaddy said that After five days of playing together it actually sounded really good. It was too easy, and we were actually really having a good time together.“

Question: What made them decide to keep performing together?
Self-contained rewrite: What made Grandaddy decide to keep performing together?