You think someone who makes over $100k/year to argue about stuff for approximately 90-100 days/year "just fine?" I don't disagree that the president has a lot of responsibility, but it's public service so he shouldn't be in the top 1% of earners. Additionally, his salary doesn't account for all his other benefits, like taxpayer funded transportation, full healthcare coverage, taxpayer funded mansion to live in, etc. Even his previous salary of $200k/year put him into the top 5% of earners, and his family wouldn't exactly be going hungry.
I don't have a problem with GOs (or anyone else for that matter) making lots of money, either, if they do it in the corporate world. If, for example, Google wants to pay a retired GO $200k/year to revamp its managerial processes, good for them. I have a problem with them making a lot of money from taxpayers by taking influential positions at DoD contracted firms. The money/influence goes hand-in-hand in this case.