SRP is an online community in which the common interest is shaving. Within that common interest, there is a wide variation in expertise, experience and preferences just as there would be in any community.
I find it enlightening and entertaining to be a witness to and a participant in the fora that are not shaving related as the discussions and the shared ideas and experiences add to the overall feeling of community. To me, the diversity of interests of SRP members is a welcome thing, not a diversion.