In addition to reasons above, resorts don't allow snowboarders because: * They have to clip in and general do so right after they get off the lift (in the way of everyone else) * Snowboarders (stereotypically) plop down wherever they like to take a break, whereas skiers can take a break by just standing  What you said above are the main reasons, it's really an just a negative attitude towards snowboarders that is now unwarranted.  Good luck finding credible sources with that though  