Mine are not seeing 2NE1 and Big Bang in concert when I had the chance.
Quite frankly, I just wasn't a big enough K-Pop fan when 2NE1 did their concert in L.A. back in 2013. In hindsight, I really wish I had seen them live at their peak when I had the chance.
I had a much more realistic opportunity to go to Big Bang's tour, but I just wasn't in the place mentally to commit the time and money to go and turned down an invite back in 2015.
Those are easily my two biggest regrets, because I'll never have a chance to see them perform in person as a group probably ever again. Well MAYBE 2NE1, but 100% not happening with Big Bang.