Well, I haven't bought a camera since the one that I bought in 2001 and I still use it to this day, an old Sony Mavica that recorded the photos onto a CD.
I dig that out once a year for vacations, shoot some photos and then never even look at them, and repeat next year. That camera still has more megapixels than my 3GS.
Even now, the few times that I have taken photos during the year, it's been on my iPhone. Maybe if my old Sony above didn't need to be recharged, I would have used it more but nothing beats the convenience of a camera on my phone that works as long as my phone does.
I'll likely never use the video camera. I have not once used the video camera on my 3GS.