I am going to apologize to start with. I havent read every post since the first one.
But being a avid Linux user and mainly Ubuntu since about 2005. There is not telling how many threads I have seen about users not liking "__________" (fill in the blank) that its keeping them from using Linux or OSX or what ever, that they must go back to Windows..
Well first off, if they were all the same. There would be no reason to have multiple OS's on the market. Plain and simple. That said, the user should use what ever he or she is most comfortable with and they should really stay with what ever is most compatible with their business. One of the HUGE very HUGE arguments with small business owners in regards to Linux is Quick Books. Its the number one killer for linux for small business owners.
Now for Finder, I love it. Its simple and effective. I am also a huge Gnome2 Nautilus fan. They are very similar on the top in my opinion. Finder has many view options, there are ways to view the full file names, but honestly there is so many options. One can get lost setting them up if your new. But I understand your complaint. I hate windows, but its file manager while crapy and full of bugs does make it easy to read the full file name without having a PHD in file managers.. Finder displays very similar to Nautilus in it wants to cut the names off to much and default spacing is flakey.. But other then that I love the user interface.
But when things are said and done. Use what makes you happy..