How Linux is bad? Why not to use Linux?

LINUX is NOT user-friendly; it is only for programmers who like to work on Linux and solve problems all 365 days in the year...

For me it was funny on the fist time to communicate with everybody trying to solve problems. But when the year is already gone and you see no improvement on this - again and again new releases are distributed which look much prettier but the inside (the true spirits of user friendliness) has never changed. At least I don't see any changes so far.

Why Linux is bad?

It can be a pain to configure

If you use non-standard hardware, it can be a pain to get going. My problem was that I had a dandy new 4X CD-ROM (which uses the new ATAPI standard) and an old distribution of Linux, so that at first I couldn't use the CD-ROM to install. I also had problems getting X-Windows to run properly on my ancient monitor. But after 3 days of hacking (and really getting to know the system, I had it all running smoothly.

You (almost) have to be a programmer.

Let's face it, Unix was made for programmers. Once you have Linux running, you'll most likely want to recompile the kernel in order to customize it to your unique hardware configuration. However, the kernel source (and most ANY other source you get later on) comes with a Makefile, which automates the compilation process. All you have to do is answer the questions. You have to be a REAL programmer when things go wrong (and they will every once in a while) and you have to fix them.

You have to become a System Administrator.

Once you've got your own Linux box, you can't simply be a regular user and expect the almighty sys-admin to worry about the details. YOU are now the sys-admin. YOU are now responsible for getting network connections working, making backups, administering accounts for your children, etc. Personally, I don't consider this a bad thing, as it gives you good experience and a deeper understanding of how networks work.

Missing appropriate software on Linux (for particular needs) / Vendor Lock-in.   - Mentioned were in detail: Branch specific, special used apps not platform independent and/or not integrated well, AD, Deployment, AS400, Sage, Meeting- and Conference-Software, Photoshop, Exchange-Integration, Smart-Phone-Integration, AutoCAD, Screen Reader, ...
Yes, this is really an issue - and that is because the fact mentioned. The result is that many developers and software companies still just focus on Windows.