40% of Americans never do, and many of the people who do don’t buy it themselves. For example, elderly people are one of the groups which disproportionately lack current photo ID but would also be more likely to have relatives helping with their shopping or simply not being carded either because they’re visibly far past the limit or have been buying at the same place for ages.
I look young for my age (well over 21) and I almost never get carded for alcohol purchases. Even on my 21st birthday when I went to make my first legal purchase I wasn't carded.
