rowghani,
i think it is a line people draw in the sand.
the claims that RC paper is unstable or won't last as long
is from RC paper 30 or 40 years ago. wilhelm ? ( image permanency institute )
and kodak did tests IDK 15 years ago that suggested RC paper would outlast its FB cousin.
some don't like the "plasticy feel" rc prints have and FB has to be better because it is FB, and not RC ..
under glass you probably can't tell the difference between the two. i've printed a lot of rc, and a lot of fb paper over
the years, all my rc prints from 35 <?> years ago look like they just came out of the wash ...
i like rc paper, its easy to use, easy to print on dries fast and is flat. ilford has a rc portfolio paper that is double weight
or something, and has more of a heft to it, i really enjoy using that ! ... i don't like rc for other reasons, not because
of the quality of the image that can be printed on it &c but because often times it has a watermark by the manufacturer so it is hard
to make contact prints from RC negatives, and because it is a pain paint on, use crayon on, write on the front or back, of an rc print.
these issues won't keep me from printing on it though ...