Jean,
Thanks for the reply and yes, you are entitled to your opinion also. I have had multiple Apple devices (and multiple generations of them - phones, tablets and desktops), but this was my first laptop experience with them. I don't expect perfection, but I do expect an experience commensurate with the price premium - something which did not happen.
I also have multiple Windows devices and have used them for years. My experience has been that if they are kept current, have the right hardware and are administered well then the issues are minimal (close to zero in my case). I have the advantage of sys admin level knowledge across Unix and Windows systems - so know that this is not reflective of the average user. Despite all the good vibes, I still wanted to try the MacBook. It's a cool piece of equipment.
Sadly, Apple just didn't come through for me. A huge miss was the requirement that to make any progress I would need to download a whole fresh copy of Yosemite. This is outrageous on a machine that is days old. Even if I cut some slack, then surely the fix is just a small amount of the overall code (OS X is based on Unix after all) or a config setting, not a complete erasure of the hard drive and reinstall. Thank goodness I had not tackled migrating data yet. I don't get it. And while my phone support guy was a true hero and exceptionally helpful, the Apple store folks did not really care (they have been great for iPhone service in the past, but were pretty useless with this issue).
So, back to Dell I went - and now have an XPS 13, a 24" monitor and a desktop all coming my way for the same price as the MacBook plus monitor. I can't say at this point that the setup on Windows PCs is harder than Macs because it took me two days to make no progress on the MacBook. It will take a few hours to set up the Windows machines, but I have a high level of confidence that the encryption will work.
Yes, everyone's mileage will vary. But again, for something not to work that is advertised as being an easy to use option (FileVault) on a brand new machine, (with nothing else configured on it) - that's a huge QA issue that Apple needs to fix. Judging by these forums I am far from alone. This is a pretty basic expectation. And then to not be able to resolve it in a reasonable timeframe without a 5GB download - and for the people at the store to be pretty unhelpful? That's not excusable, so I returned the MacBook. Caveat emptor.