I've lived in Dubai for a few months. I'm writing this right now from central London.

I agree.

What is life at those wealth numbers? Anywhere you go would be the same lifestyle. Granted you’d need to be a lot more underground in Dubai but I’m sure they can figure out how to get coke and high end escorts and hang out on boat off the gulf coast. Ditch all all the alcohol in the ocean and head back like a good Muslim, no questions asked.

Not at all, I suspect the more money you have the more you care about what your city has to offer. Restaurants, clubs, sporting events, galleries, museums, theater, society -- London has far more amusements for the wealthy than Dubai.

For a Russian Oligarch London offered a community where other Oligarchs, western elites could mingle. The galleries, museums of London's are impressive but Dubai has some of the finest galleries/museums/restaurants in the world. They offer a wealth of everything and much more like Swim Amongst Sharks at the Dubai Aquarium and other things banned in the western world.

These things are tourist attractions. People who reside in a place don't usually habitually visit tourist attractions.

Dubai is vulgar place. Even an oik with a helipad on his yacht knows that.

Plus any multi billionaire can have world class chefs on retainer.

Part of the eating at exclusive restaurants thing is to see and be seen in public doing the things people know to be exclusive. Private chefs don't quite do that.