He is 90 and does have the beginnings of dementia. We have tried to suggest and have taken him to senior centers which have things to do. He insists he is not old. His recent purchase was a pull travel trailer which he is going to see the countryside with. He has no business doing this and is not in the best of health but gets so angry and tells me to stay out of his business. I am at my wits end as to what to do or handle this situation as I do not want it to turn into a shouting match.