It's called Windows because it's easily broken
My current laptop came (in August 2013) with Windows 8.0, but by February I had to upgrade it to Windows 7.
1) Within two weeks of getting it, a Microsoft Upgrade went wrong and trashed the OS — and only then did I discover that the stupid Secure Boot (which "solves" a "problem" which hasn't existed in years, that of boot-sector viruses), along with UEFI, was preventing my system-rescue USB stick from booting (or, indeed, boot from CD or DVD). Fortunately the problem resolved itself, but Secure Boot was disabled shortly afterwards.
2) I couldn't get the legacy Help system from the MS site to install; even the version labelled as "Win8, 64-bit" came up as "this is not compatible with your OS".
3) I tried "upgrading" to Win8.1 in the hope that it would fix this, but it didn't — and introduced a far worse problem, namely that workgroup access under Win8.1 carries the stupid and unenforceable requirement that all system clocks in the workgroup be perfectly in sync; so the main effect of the "upgrade" was that I could no longer access my network.
So, having backed-up my hard drive, I then formatted it, switched the boot mode to CBR, and installed Win7; once I got the right drivers, there were no further problems. The upgrade also cured the other major problem I'd had, of Win8 burning up far too much Internet transfer allowance (5Gb, an entire month's allowance, in sometimes only two days).
If/when Win7 is no longer supported, I'm going to migrate to Linux.