Uh oh, watch out, this one is likely to reignite that decades old debate of RC versus fiber
I too do not see much point in adding glass, but some people prefer it and expect it. At least when
exhibiting prints, I'd much rather not see glass over them. Glass subtracts so much of the experience of paper texture... the feeling that the print is
in the paper rather than
on it. That effect perhaps isn't quite as important as it is with oil paintings, I suppose; I've always thought that oil paintings weren't glazed so that we could appreciate the brushstrokes, which can be very 3D.
(Especially now that analogue prints are in direct competition with inkjets, I think it might well be a good idea to showcase the texture and the durability of analogue and leave the glass off. The difference between the two is nowhere more clear than with matte fiber...)
Bottom line: do what you want to do!