Though I've never tried wearing diapers 24/7 myself, I know quite a few people who have. Some of them say that diapers lose their appeal after a couple of weeks or months. Others say they enjoy diapers as much as ever after 2+ years of being in diapers 24/7.
People who wear diapers 24/7 take different approaches to it. Some declare the toilet off limits and use their diapers for both of their intended purposes. Some only wet and use the toilet for #2. Some use the toilet whenever it is more convenient to do so.
I do not know anyone who has quit working in order to wear diapers 24/7. All of the 24/7 DLs I know find ways of incorporating diapers into an active work and social life. I think one or two of them found jobs that allowed them to work from home. Most found ways of concealing their diapers effectively and wearing them in an office or other work environment.
I don't know you, your, your work, or your finances, but I think that for most people, retiring at age 29 would be a bad idea. Financially, it is very risky, especially given the low interest rate environment we're in. It's also psychologically important for most people to have some kind of productive work. (Of course that can include unpaid work as a volunteer or caring for one's children.) If you are thinking of retiring, I have to wonder whether it might be better to pursue a career change rather than retiring altogether.