Good lord, man, I'm talking about people. People who can change their minds at the drop of a hat, who can find stress to be too much to deal with, who feel scared, alone, unprepared; people who might not give the issue a lot of serious thought until it happens to them, people under pressure from peers, societry, politicians, church leaders, doctors, parents, family and their neighbours to conform to a standard they might not hold.
You act as though people are rational robots living in isolation. We're not, and any experience with common or garden humans would make this blatantly obvious.