Perhaps now is a good time for those that insist on installing to internal, for no real gain, to note that doing so does involve some risk, unlike installing to external media, and shouldn't be attempted until you have a working backup of your original Android FW
These warnings have been repeatedly issued throughout these forums.
It's a shame that some only decide to read up on what they're doing after they are affected by the possible issues that previous posts attempt to help others avoid.
Perhaps in some cases there is also no reason to be spiteful or judgmental.
Just because you might not see a benefit in installing to internal, does not mean everyone thinks the same way.
I see a few reasons - convenience, speed (yes, it is faster - think access times), spare SD card to use for test builds and/or other things, potentially free SD slot in the box to use for other things (game ROMs, pictures, video files, music)... and probably more reasons for others that I am not thinking of.
Since I used installtointernal before, followed the protocol exactly and had no issues whatsoever in the past, I did not see a risk in doing so.
Furthermore, as far as I remember and the feedback here goes, the particular issue I described has never been encountered by someone else before.