Re: Windows -> Linux
TurboTax? Quickbooks? Quicken?"
Like all things - if you really, really* need them stick with Windows. It's not obligatory to move to Linux. However in my experience (I've used Linux since the mid-90s and abandoned Windows ~2006) there are plenty of alternatives for what I need as I mentioned earlier. In any case all the scientific software I use was written for Unix/Linux or Mac and easily ported
*From past experience many people say they need Word when they want to just write a letter, or Photoshop to shrink a photo or adjust curves.