Absolutely, cherish this time with them. It will be gone before you know it.
I just spent a day with Michael my oldest boy now 17 at Kings Island. Seems like only yesterday he was a toddler... It really sneaks up on you.
There were certainly times when he was 13/14/15 that I was sure he wasn't going to live another day. But those are a distant memory now.
I know people told me that 17 years ago, but I didn't really pay attention.
-MD