hm, no, not true for me ... I was perfectly accustomed to to normal rm for a long time, until I once deleted my home directory. Once is all it takes (mind you, that was one out of >= 10^5 rm's that I ever typed).
Anything that asks you before deleting will make you think, even if it's after typing "y" for the 15th time ("hm .... strange that I am still typing "y" although I was only going to delete two files ... hm ...")
As for the second point, of course I wouldn't think of figuring out what I actually wanted to delete after being asked by -i ... that completely defeats the purpose of a safety net (and maybe that is why many in the thread do not understand why rm -i is a good thing, because it can be used for the purpose of making a deliberate selection ...)