Hi Marko,
Well, you are right that it is usually convenient to build your own package and install it, however in my case I am a developer and i build and test several applications and libraries directly from CVS and SVN, thus using pkg is a bit impractical.it might be the easiest to create /usr/pkgsrc/riccardo/xyzprogram and then to create a pkg there for the program you wish to install. While getting a program to compile in the pkgsrc framework has some overhead you save on some other tasks where pkgsrc just does the right thing. The few times I have installed a program _not_ using pkgsrc, I ended up regretting it later.
I wanted to discuss the matter and understand if there were any specific reasons before opening a pr.
Thank you. Riccardo