Personally, I've found maturity an overrated quality except in wine, for both creative artists and lively people in general have much to gain from facing the world with the unsullied vision, flexible responses, and playful sensibilities of a child.
Watching some Futbol. For everything Americans don't dig about it-- the scarcity of scoring, the flopping-- the lack of time-outs is pretty awesome. The game is 90 minutes, with the 15 minute halftime and then a few extra minutes at the end, free of baseballs and football's start and stop, no strategic timeouts, none of basketball's endless fouls to end a match, etc etc. And no time for commercials... probably to the sport's finances detriment in this country.