The hot weather when you went to London.
The long flight from JFK to Dubai after your long US vacation.
Or the fact that you had to get an expensive cab from Goa airport to the Taj, because there is no Uber.
Sometimes the things we complain about are the things we once wanted when we were climbing the ladder from rags to riches.
If you are on the receiving end of luxury while dealing with things you cannot control, a wise way of life is to not be on the giving end of complaints.