I feel compelled to direct you to a site that to me exemplifies the power that photography can have over us. Perhaps this touched me more because I have a father who's in a similar situation but I think these photos and accompanying text would be moving to anyone. This truly speaks to the power of photography on a personal level and I think it's something we should all strive for in our images. I'm not sure I'm even explaining this right but you'll know what I'm getting at after you look at this site.
Please take the time to explore Philip Toledano's Days With My Father. To click through the presentation, simply move your mouse to the bottom of the image.