My personal machine is the first and only new computer I ever bought: a 2012 Mac book air. I wanted to get a pro but couldn't justify the price. I took it in to get the battery replaced a couple of years ago instead of upgrading, again, I couldn't justify the price. I think I'll probably get the battery replaced again soon as it's started to falter. For the stuff I do in my spare time this machine is totally adequate. I also have the original iPhone SE as my phone which I will probably get refurbished soon instead of getting a new one - all the new phones are too big.
I have a machine given (lent) to me by work though.