True. Maybe the ones complaining are the companies that aren't as attractive to GenX as much as they were to baby boomers.

Agree! IMHO, today smart watches are expensive fitness trackers. Rest all marketed is just meh.

True. I heard India did it with a notice of 2-3 hours.

Actually the notes stopped being legal tender within a 3 hour notice. But the government has given a time period of 50 days for someone with the old notes to go to a bank and either deposit them or exchange them for new notes.