Anything's better than Windows 8! After trying Windows 8 and adding a start-menu add-on and a few other tweaks, I gave up and reinstalled Windows 7.
I'd be cautious about installing the "insider preview". Keep in mind this is work in progress. To quote Microsoft,
“The Program Services include experimental and early prerelease software. This means that you may experience occasional crashes and in rare cases data loss. To recover, you may have to reinstall your applications, the operating system, or re-flash your device. Using the Program Services on some devices may impact your warranty (check with your device provider). By participating, you agree to frequently backup your data.”
I also read somewhere that when the final release comes out, you'll have to reinstall the OS and all the apps.
Since I am skeptical that Windows 10 will actually be free and I have dozens of software applications installed, I'm not even interested in their beta testing and/or being one of the first "free upgrades". I'll wait a few months before even thinking about trying.
On that note, I just made a backup of my Windows 7 drive. I plan on restoring to another hard-drive to make sure the backup is good. If that works, I may try Windows 10 on the backup to see if there's any reason to upgrade. I don't want another repeat of the Windows 8 installation
, which takes me about 1 to 2 full days to get everything right.
If all else fails, I have a good, stable, reliable Windows 7 desktop!