So, given the question "Why did YOU choose to use FPC +/ Lazarus IDE" what pre-canned answer options should be provided?
My reasons for choosing FPC and Lazarus don't fall into the pre-canned options you offered.
The two reasons that were key in my choosing FPC and Lazarus are, first, FPC's support of inline assembly in 64bit. I strongly dislike C but I can tolerate it. However, when MS decided that their C/C++ compiler wasn't going to support inline assembly in 64bit, that broke the camel's back.
The second one is directly associated with Lazarus and it is, a capable, usable debugging environment. Lazarus is very likely the best front end to GBD. Source level debugging with Lazarus is really good. Assembly level debugging, that still needs some work but, fortunately, for that, there is cv2pdb which allows debugging FPC executables using Visual Studio's debugger.
After those two key reasons, the fact that I like Pascal and I know the language definitely had some to do with it. The fact that, in 32 bit, it is often possible to have a single source (without a bunch of {$ifdef somecompiler} in there) compile wth both, Delphi 2 and FPC is a very welcome bonus.