Update, I know I touched on this subject before in my previous reply so I wont try and repeat myself.
These are the nine reasons I think why pepole think wearing diapers is bad as a fully grown adult.
1. Wrongfull perseption or judgement calls, pepole think that if they see somebody wearing diapers or nappies who isn't obviously disabled that they must be a pedofile or have a sexual or mental disorder.
2. Lack of education, People still belive the outdated view that diapers are childish and something that should remain a taboo subject, and this isn't always the case either as many people have to wear them due to their professions or jobs this ranges from sports car drivers to pilots and astronaughts or deep-sea saturation divers medical staff like surgons or jail/prison gaurds wear diapers/nappies and it has nothing to do with childish obsessions.
3. Lack of appritiation of the known facts (invincibility factor), many pepole have in their minds oh it will never happen to me and totally as a result they forget the simple fact that as we age our bodilly functions change too or they don't think they could suffer any form of disability relating to a pysical accident or medical condition.
4. Bullying or abuse, many people forget that if you come across somebody who has been bullied or tortured all of their lives then they have a genuine condition known as ptsd or simillar condition and they may very well be subject to with-drawl or regression to a child like state of mind.
5. lack of care for the elderly or disabled, many people who simply don't understand why peapole wear diapers simply don't understand that there's a chronic lack of places where those who are disabled and or terminally ill, or those who are elderly can go to be cared for as specially if the government is squeezing resorces and so forget that the vast amount of those paitients require home based care.
6. Sexual or pornography portrail, the fact that there are many sex based websites out there involving those who choose to wear diapers is distresding to those who really genuinely need them because it paints a negitive and un-wanred and wrongfully negative portrail of those people as being something they are not (see earlier statement).
7. Hate-crimes or want to hurt people, sadly in society there are those who willingly go out to hurt or humilliate peaople with disabilities and although illigal will stop at nothing to cause someone they target to comit suicide or breakdown in these cases the individuial targeted can have his or her life ruined and this kind of hatered should never be allowed.
8. Lack of clean toilets or dirty facilities, many people dislike for obious reasons going to use dirty or un-hygineinc facilities and try to avoid this by wearing diapers and this should never have been a problem if it wasn't for all the negitive persecptions that still exist in todays society.
9. Long Distance Travel, many people forget that travelling for long periods of time can cause problems with incontinence and over-look the fact those who genuinely need or choose to wear diapers often times don't have the choice or luxury of where or when they will need protection in the form of diapers or nappies and this goes for people of all ages from infants to the elderly.
In all these cases this is the portrail or reason why people can get the wrong ideas about of those who either choose or genuinely need diapers.