Went back to my old gym and it was SO weird

So last Saturday my wife watched the kids for a few hours and I hit up my old CrossFit box that I used to go to 5 days a week. I walked in expecting to feel like I was back in my element but honestly it just felt strange? Like I didn't fit there anymore. All these guys talking about their meal prep and personal records and I'm just thinking about how I need to get home to help with naptime. Spent 45 mins instead of my usual 2 hours and felt totally fine with it. Who am I anymore