My parents (80s/90s kid) thought that sugar caused hyperactivity so I was very severely limited on what I could have. Candy for rewards at school was always sugar free and provided by my folks, when I trick or treated I was only given Halloween night to go buck wild and then the remainder was set aside as a one-a-day treat after dinner assuming I was good that day. I think the whole sugar>hyperactivity thing was debunked but they never really changed their tune on it. Once I was able to buy my own food I developed a bit of a sweet tooth, but I ironically am far more dependent on caffeine than sugar in my daily consumption. In my 40s now, not unhealthy or overweight and if I ever get around to improving my diet it will be reducing my alcohol intake.