I may be speaking for some of the older dads here. You enjoy and consider every day of your son's and daughter's lives...they will soon be thinking independently and not looking to you for guidance any longer, spreading their own wings getting ready to fly, and that time cometh right soon...
It's hard for me to believe that my own son is 25 and my daughters are 17 and 23 with my middle daughter married and just giving us our second grandchild! I now not only have pix like the one with your son with his face in the cake, but of my grandson doing the same. Being a dad is like a bucking bronco and a roller coaster ride all at once, but it is all worth it!
Congrats and awesome picture Max.