I so want to go back to an iMac... I loved mine back in ~2010. After about one year I had a simple fan issue, the fan was making high pitch noise (revving full

I so want to go back to an iMac... I loved mine back in ~2010. After about one year I had a simple fan issue, the fan was making high pitch noise (revving full speed) and would start up randomly. It was likely a very minor issue... but then i felt so powerless : to fix it I’d have had to send it back and wait, my entire development environment, private files and notes, browser with possibly logged in sessions,... I mean you have to return the entire thing... it’s not like you could replace the power adapter, or screen. I’ve been wondering about workarounds as I don’t care for "triple a" games, plenty of awesome smaller games that dont need a beefy and hot gpu. But the only idea i have is to install the os and everything on an external SSD so at least if i have to send it for repair, I have all my dev stuff with me. I could also have a linux install so i can even use it in theory without the mac, but then what is the point of getting the imac and its os experience right? So I don’t know what I am missing... how are other devs comfortable with this?