Barack Obama's net worth is $70 million. George W Bush's net worth is approximately $50 million. So, neither has "$100millions". And if its their own money, what the fuck do you care what they do with it? As for all the government money you claim they're taking, "bankrupting the nation":
The secretary of the treasury pays a taxable pension to the president. Former presidents receive a pension equal to the salary of a Cabinet secretary (Executive Level I); as of 2020, it was $219,200 per year and since January 2022, $226,300. The pension begins immediately after a president's departure from office.
Wikipedia: Former President's Act
Exactly what Trump is being paid.
So, since leaving office 8-1/2 years ago, Obama has gotten $1,810,400.00 from the US Government. The housing allotment is used specifically for upgrading security at his residence(s). Not one penny of that goes into his pocket.