I'm not inclined to be a guinea pig for these. I suspect maybe later in my child's life they will have been proven long-term safe (or not). I'll be old or dead at that point. I'm really wary of putting anything not known to be standard food or medicine into my body.
I feel this way about other things injected into the masses with little safety data and perverted informed consent.
Im not allowed to express that sentiment, without significant backlash.