I know the OP said DAILY, but I know someone who commuted weekly to Hong Kong for 10 months.
Apparently he generally worked all of Monday and half of Tuesday in London, before going to Heathrow for an evening flight which arrives on Wed afternoon. Then it was straight to the office to work late on Weds, all day Thurs and Fri then return to London on the midnight flight, arriving Saturday early morning.
So he got to spend most weekends with his wife and kids, and after the conclusion of that project, he can retire whenever he wants to. However it was still pretty awful despite flying in first class most of the time (the company paid for business class, which earned enough miles to upgrade to first, and whenever business was overbooked he would be the first to be bumped up)
When we were discussing this commute, he told me about a mythical figure who used to commute to New York once or twice a week, when Concorde made it possible to return to London on the same day you left while giving you an hour or so for a meeting in NYC.