My first time with an actual chastity belt was pretty much exactly as @Foxies described... the anticipation, the frustration of having to adjust it, almost giving up, the excitement of finally getting it to fit and so on.
Not sure if it counts or if I should even mention this on here, but I have been playing with the concept of denial for years. When I was in Berlin I had a latex catsuit custom-made, and I would use that to give me similar sensations.
It's a neck entry catsuit, so there are no zips to get into it. It's super stretchy so you squeeze in through the neck, and once it's on, there's no getting out of it easily. There is a zip at the crotch so that you can relieve yourself (in a variety of ways!), and I had a two-way lockable zip installed from the factory.
The first time I tried it on was overwhelming. I had played with latex before, but I had never been fully encased in it. Being custom made, it was truly like slipping into a second skin. In some ways it dulls your senses, but in others it fires them up... it feels like every pore in your body is being caressed or softly kissed.
But it's the feeling I got "down there" that I want to talk about, and it's really difficult to describe. It's like your private bits just aren't there anymore. If ever you played with Barbie dolls when you were little, you know what I'm talking about!
I also tried experimenting with latex shorts over the top or underneath my catsuit. It's just bizarre. When you reach down it's totally smooth... you can kind of tickle your fun button I guess, but it's not enough, and there's certainly no chance of any penetration. The only downside is that you're limited by toilet breaks, so clearly it's not an effective long term solution!
So I guess that's what led me down the path of playing with chastity belts. Being filled with overwhelming desire and being denied in this way is intoxicating. I don't know why, I guess your brain just wants what it can't have. It doesn't understand why it can't get satisfaction, so it ramps up your libido. It's a vicious cycle and it's totally addictive.
But for me, this is always going to be a game. It's a means to an end, even if that relief might be days or weeks away. I can't image taking something so enjoyable for me, and turning it into a 24/7 nightmare for someone that I love... especially if that "someone" is my offspring. I truly don't understand why someone would want to inflict pain and suffering (or worse - heightened sexual desire) in their children. These parts of my life exist in completely different spheres, and to have it any other way is just completely unfathomable to me.