What is the context of the question? The answer is always "Yes! at some point". I have installed Windows 10 as a VM on my MacBook pro to evaluate it to serve my customers, but I do not find it compelling enough to upgrade from Windows 7. I never cared much for Windows 8/8.1.
I run multiple operating systems on a multitude of hardware. All of my primary systems have quad core CPUs. 2 have 8GB of memory.
I have serious reservations about upgrading to Apple's Yosemite or Microsoft's Windows 10. Both are offered as a free upgrade, which is unprecedented in the history of products those companies have produced. It has me asking why? Given that both of those companies have a track record of including spyware in their OS, I wonder if their free distribution is related to that or offered as a measure of countering the ever increasing install base of Linux operating systems.
I live in a very low populated rural area, and even here I see the use of Linux spreading (which I help to do, but I'm surprisingly not the only one). With only 10K people in the entire county, I know of at least 7 people that only run Ubuntu. That may not seem like many but given how many STILL run Windows XP on hardware > 10 years old to read email or look at facebook as their primary use of the computer, it is actually significant.
I boot Windows 7 on the system that runs my home theater in my living room, but it also can multi-boot Open SuSE, Mythbuntu, Mint, and even Windows XP. I can also run several versions of Linux under VirtualBox. I use this system running Windows 7 with Dragon Naturally Speaking to write The BitShares Saga and produce graphics with either PhotoShop, PaintShop Pro or Gimp.
My MacBook Pro uses OS X 10.6.8 (Snow Leopard) and uses Parallels to run an identical copy of the Windows 7 on my home theater system, as a backup. The Mac also has various flavors of Linux VMs that run under Parallels.
Until I started working on graphene I was primarily running Xbuntu on my Dell quad core. It only has 4GB of RAM currently, but will dual boot Xbuntu or Debian. I recently upgraded the Debian OS to 8.1 from the early beta release of Jessie, version 8.0. The GUI, being based on Gnome 3 is definitely more resource hungry than Xbuntu, but my delegate partner wackou prefers Debian and thus I thought it might be a good idea to work with that OS a bit more regularly so it has become the primary OS choice on that platform.
I wouldn't call myself a command line power user (unless you think find . | grep LO* | xargs rm qualifies as a power user example) but I'm quite comfortable with the shell. You better get comfy with the command line if you want to deploy on a VPS server! It also helps to keep your memory sharp!
A long-winded answer, but there you have it.