People should do what they are most comfortable with.
When my mother passed two years ago at 94 most of our relatives and her friends had already gone before her. My brother and I decided on a cute & fun photo of her when she was in her thirties with both of us kids in it. She looks great in that photo and very happy!
In later years she suffered a lot. In her 80s she dealt with a broken hip & osteoporosis then in her later 80s & 90s she had gotten a broken neck and had an aide living with her. She had gotten frail and stopped going to the hair salon (which she did every week for decades) and let her hair grow longer and get gray. She did not look her her best at the end.
I don't see why one wouldn't want to be remembered looking more vibrant and happy.