I wasn't as young as you when I started needing to wear 24/7, I was about 42. One of the reasons people feel bad about having to wear diapers at younger ages is the training we had. Most of us were told diapers are for babies or for old people in the nursing home. It was a shaming way to potty train us. Well as you have found out, that isn't true. People need diapers at all ages. I was like you in the fact I liked and played with diapers as a kid. I was a diaper lover even before I became incontinent. At first it was a struggle to accept, but when I stopped and thought about it, I ended up getting something I use to enjoy as a kid and now I get to enjoy them as a grown up. I treat my diapers as my underwear. People don't normally go around asking you what type of underwear do you have on, only you know.
So I have been in diapers 24/7 since 2007. I wouldn't give them up for anything now. I live a normal and very productive life with no one knowing what my underwear is. There is nothing to be ashamed about because you have to change your underwear more often the "normal" underwear people. Life is to short, so all your diapers to allow you to live a quality of life that you want to live.