My early 2015 MBP is still my daily driver for programming, I will never regret spending so much on an MBP when they last this long. I went through two windows laptops in four years before this one. It is starting to show its age with only 8 GB of RAM, but I’m going to use it until it melts haha
Exactly what I do with my ancient series 3, I have had no issues unless I forget my charger. I can go maybe 36 hours before a charge, closer to 30 if I do a few workouts.
That all being said, my fiancée and a friend both have series 3s that can’t even stay alive for 12 hours. I had my watch for a year longer than they did, so it’s not an age thing, I just think the batteries are very hit or miss.