In my experience, age has had little or nothing to do with adults wearing diapers. (Until past 80 or so anyways). The same for your family lineage. Though eating like that could, lol. Next time when you want to put out a personal add, please make your own post instead of hijacking someone elses thread- or at least try to disguise it as being on topic.
And ps, I'm 41. I've already started up one hill, but had it blown apart with me on it. I've since rolled down what's left of that hill with the vigor of a pile of dung, then started crawling up another hill. In all that time, my diaper has been spotted more times than a white elephant.
Most recently was just the other day. I was talking to my good neighbor about my recent turp surgery. He had no idea what a supralubic catheter was, so I showed him the scar from where it was. As I lifted my shirt, he said "yup, that's a diaper". Ended up have a few matter-of-the-fact, medical type questions towards it too.