I'm 26 right now and I'm not planning to have kids until I'm 35 for this exact reason. I don't want my kid to say: "Daddy, why do other kids have disease resistance and I don't? Do you not love me? Or were you one of those stupid anti-CRISPRers who don't believe in science (the anti-vaxxers of the next decades)?"
I'd rather wait for 5-10 years to make sure I don't make a lifelong mistake.