But just because it seems like my turn, it's something I thought long and hard about.
Harrington did say he felt it was the right time to become captain. Hear we look back at a selection of his stand-out moments for Europe as both a player and a vice-captain.
Yet Harrington knows too that Europe will be facing a wounded animal at Whistling Straits.
"I have to be a confident captain as much as I need 12 confident players".
McIlroy needs to play four European Tour tournaments outside the majors and World Golf Championship events in order to retain membership, but now only has two on his schedule.
American Xander Schauffele tied the course record with an 11-under 62 to win the Sentry Tournament of Champions. The only American player to tee up in the French Open at the same venue a year ago - Justin Thomas - was unsurprisingly the top points scorer for Jim Furyk's side, and that was telling.
Harrington, of Ireland, was a vice captain on the past three European teams, victories at Gleneagles in 2014 and Le Golf National in 2018 and a loss at Hazeltine in 2016. Paul is a fastidious, meticulous, incremental thinker and everything he does is super-organised. A Ryder Cup captain's job is, essentially, to rewire that mindset. He raised the bar, created the blueprint for future captains.
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Harrington is known to have been a popular choice among the team that stormed to victory in Paris previous year.
Harrington has been a vice-captain in each of the last three editions after making six appearances as a player, four of which resulted in victories for Europe, and he has been charged with the responsibility of retaining the trophy in Wisconsin.
"He gives so much to the Ryder Cup; the Ryder Cup gives so much back to Rory that he can't get anywhere else".
Europe defend the trophy won by Thomas Bjorn and his team at Whistling Straits in Wisconsin in September 2020 and it will be Harrington who will lead the team.
"The second thing is the golf course that we're playing on is a European style golf course, it's a golf course that really suits the European style".
Fred Couples is a contender, while I doubt if Tiger Woods or Phil Mickelson will be right for the job next year. Even mentioning a cup of coffee has been known to tip him into angst about how best to make one. He's a good guy, well respected, and he's already enjoyed success as a team captain in the Presidents Cup.
"I know taking on the Ryder Cup captaincy is a different thing, it's a different level and I'm conscious that I have to find that edge and add to it". His actions are all about the Ryder Cup.