Sadness. Vacations and kids growing up and time passing too fast

Newbie here. Signed up specifically to mention/discuss this thread:http://ift.tt/2pap4Zn spoke to me very much.I too am a father of two, 6mo and 4yr olds. Happily maried, as are both sets of parents. Great jobs, and my wife is able to take off an extended period of time with each newborn. We are blessed.No real basis of depression, anxiety, etc. never had it. Were healthy, happy, and just all love life, doing things together, being together, etc.But I was recently on vacation and really got into a funk. That's how I came upon the link above. Perhaps I'd call myself "nostalgic", with a side of photographic memory. We were with family, so there were baby pictures of my first, we were all together having a great time, and then our time was over. Similar to the other thread mentioning about breaking down when seeing some little kid shows and whatnot, the pictures and memories just made me lose it. And Ive not been able to get out of it since.Ive read about post-vacation blues, and stuff like that. I have a great job, love my home; while I'd love to be on permanent vacation (ok not really), there's nothing I don't look forward to.What makes me sad, almost resentful, is my kids growing up (and I love and are super proud of them and say this all the time). Is the logical, mathematical side of me knowing that each bedtime book is one less we will read before he doesn't want me to read stories. Stuff like that. Its a glass half empty perspective.There are blogs that say to savor, it goes by too fast. There are blogs that say they don't savor x stage with their young children, and the later ones are better. Both of our kids have been flexible, easy, and a joy. Doesn't mean our 4yo listens all the time, it just means that we make lemonade from lemons and enjoy every second.So, after all this babbling (thanks for reading), I have some questions:how do you deal with your kids getting older, especially if you get sad over it like I'm describing?what do you do specifically to help "savor" and remember every minute? (Im invested in camera equipment for this reason; don't take pics daily, but do take pics of any trip, event, cute stuff, etc)how do you deal with the fact that as your kids are getting older, you are too? I know this bothers me sometimes too. While I'm in my mid 30s, I still feel like I am in hs or college, and those memories are still strong with me too.what do you do to help remember vacations with kids?what do you do to help time together go slower?Hope some folks get my angle. Like I said, I associated a lot with that other thread, and need to break this funk. The last time I felt like this was when I was in 4th grade coming back from camp.And don't listen to Alan Jackson's "Remember When" if you feel like me!!Thanks! via /r/Parenting http://ift.tt/2pTkRr0