Personally I use Linux with the graphical interface Ubuntu. Installing it is a little gnarly, so you want to buy it pre-installed from some place like System76.Com. After that it updates much better than Doze, in that you don't have to constantly re-boot, and it is totally easy and fast. I have never had the blue screen of death. It is secure by design, not afterthought, and open-source so any holes get plugged fast. I have been using it for 10 years now. I run OpenOffice for the spreadsheet etc. stuff- free, as is Ubuntu. No need for any anti-virus crap running on top of your OS, and if you are stupid enough to go to porn sites or open bad attachments, they won't work as they are designed for Windows holes, or, now. Mac holes. Think about it. Pay a little more for a PC with this pre-installed (actually Macs are about the same price and all you get is that girly apple on the laptop cover). System 76 has some nice systems, and in fact the one I am using now is 5 years old (which cost $2,000 then) and runs like a scalded dog. And, consider, every damn server you are contacting via the net uses this same OS. There is a reason they don't run Doze or Crapple software. A big reason. Why not go with the big boys?
Regarding investing, I run 4 different Interactive Brokers Trader Workstations on the thing, along with a few Chrome browsers with various investment sites in them, plus spreadsheets and so on, and it runs... fast. And never crashes. I will reboot when I have to for updates, but unlike Doze this averages once a month, so I just reboot then, as this OS has no memory leaks and other stuff that slows stuff down and eventually chokes the system.
Anyway I am a serious investor with millions under management so I must have solid and secure tools. And oh, there are plenty of apps available for free or a small amount of money to extend the system, easy to find and painless to install. You just have to go through a little learning curve, in which you will find everything is superior to Doze or Crapple. But, if you are running stuff on a smart phone, you can't run it. In that case, use a Droid system. Apple/iPhone screw you. But for a desktop, use Ubuntu. Right now I am looking at 3 monitors, and you can have 4 sets of these 3 windows in each. Christ, you have to be a fool to have anything else.
The only reason more people don't use it is that there are no advertising dollars behind it. So if you want to continue being sold down the river because you are too ignorant, or stupid, or lazy, to change, please do. In that case I expect I am taking your money in the markets, simply because I am less ignorant, less stupid, and less lazy. Ha ha.