Just that really there was a thread back in 2010 about someone getting married at 16 and the overwhelming response was it was fine just about but a recent thread about raising the age led people to say how disgusting the whole thing was and how 16 was far to young. People age 18-22 are still seen as adolescents by many people. Generally speaking teenagers are seen as far more immature and are seen as ready for things far later. Aibu to ask why you think this is?