“Should I Update to High Sierra?
I think I usually tell people to "take it slow" with an entirely new OS version. While there have been "huge win" updates in the past (10.6 is a great example), High Sierra isn't one of those.
Rather, while it may be a good (or even great) update over time, it also has the potential to destabilize things far more than anything that's come before. It's going to be hard to judge its impact until its wide release, and even then, it'll be a while.
If you're a normal user, I would strongly encourage you to not update to High Sierra right away. Let others take the risk. Wait until things calm down and the initial problems, which are inevitable, are fixed. Continue doing what you've been doing before High Sierra: you're not missing anything of significance.
If only we would listen to good advice. My mom's iMac killed the internal SSD on High Sierra installation, there didn’t seen to be a way to reinstall macOS directly on it, after repairing it via Disk Utility. I booted off the external drive (running Yosemite(!)) and it then promptly hung for good trying to reboot it.Back up before you upgrade!!!!