Before having children, my age kind of stay the same, a year passed by and looking into the mirror I had barely changed. I still considered myself to be 25 well into my 30's.
With 2 wonderful children getting older (and cuter, I must add) I can no longer deny that even I am getting older along with them, and this means I'll be joining the 40 - something in a not too distant future, even though I am not changing half as much in a year, as my kids do in a few months.
I love going through snaps of my children and see how they have changed, and they love looking together with me, laughing and asking in disbelief if the picture is really of them.
We would lose out on a lot of memories, had I not been a photographer.