You get to torture research students and take long golf breaks after a few decades experience. No private jet, but lots of free flights to exotic places -- you may have to give a half hour talk though, which interrupts the golf playing. Tortured research students will do the grunt work & even write the paper if you torture them enough... If you are *really* lazy, or the golf is really good, you can take a research student with you to give the talk, but that's wasting a free flight you can take later in the year... Also they get above themselves if you give them any perks...