Maybe American millennials. When I did my test in the UK manuals were most cars. You can do your test in an automatic but if you do, you can only drive automatics legally. Which can cause some problems especially if you want to hire a car.

Almost all the millennials my age can drive and and a good percentage probably own a manual. Automatics are gaining ground in the UK but they're still typically more expensive. I suspect 17 year olds are still learning to drive manuals in the UK right now.

Sorry to ruin the joke ;)