I've refrained form this thread in the main because I know 3 mates who are vastly wealthy and guess what, only 2 are boring.
1 has all the stuff he finds interesting in this world of his, none include bikes, he has a few cars (McLaren thingy, Ferrari thingy and one of those funny electric jobbies) married a 23yr old ex dancer, works in Russia and has a place there too, jets to places for "fun"
1 has a longstanding wife, 1 kid, 1 house in Surrey, 2 cars (an XC90 and Golf) and spends bugger all on anything, make me buy the curry and on occasion he'll dip in his pocket and buy a round. To say he's tight is an underestimate on a magnitude scale of 100, he's a 90.
1 has married twice, no kids, heli ski's and snowboards in Zermatt and has a sting of girlfriends longer than I can do a fixie skid.
When you are out with either they are so not boring, they are the most friendly happy and upbeat folks I know.