I'd agree with what a lot of people here have said about your parents and/ or friends don't need to know about your fetishes...
But I also see how some people would want to have that feeling of acceptance from there parents/ loved ones as a way to say that it's okay for me to have a love for diapers...
In my many years of have a fetishes I have only ever told 3 people and those times, where when i was talking to some of my best female friends, and my little brother. But nothing has ever been said after they found out.
I have never told my parents as its non of there business what I wear under my clothes, but they have never not trusted me or snooped in my room when I live with them... But I do know they well love me know matter what because that's just the type of relationship we have...
So if you want to tell your parents/love ones/ friends you need to have first accepted who you are first, and be comfort to hand what ever out come happens ... We're all adults and we can see both outcomes and know what they are!