My windows 10 is running a higher fps in games than 8. Given that's all I really do on my laptop I am stoked thus far.
The programs it takes a bit to get used to but they are in the start menu somewhere. Personally I was just getting used to the windows 8 way of finding programs but I guess the older users complaining got their way and the start menu is back.
If you are looking for a specific program, try using the search (default is a search bar, bottom of screen, if not there is search in the start menu). Type in your program name and it should appear. I don't see why the update should have deleted programs.