It's true, Agassi did have a somewhat erratic temperament when he was younger and made a lot of pretty rash decisions. I shouldn't worry about him skipping the AO though, as it wasn't just Australia that got the brush off - he once famously claimed that "there's only one thing worse than spending a night in Europe - spending two"
He mentioned this in a recent interview and observed how much he'd matured and begun to appreciate Europe more since being married to Steffi; in fact he even confessed a secret likeness for soccer - what a thought!
Some journalists had a theory that Agassi skipped Wimbledon often not because of the clothing rule that stopped him wearing his usual outfits, which is surely the most pathetic excuse for missing a Grand Slam imaginable, but because he harboured a secret fear of failure on grass and thought he wouldn't be able to live up to expectations on it.
Good job he realised in time that he was actually pretty good at Wimbledon, wasn't it?