Anybody (here) would teach you. We would bundle you so you wouldn’t freeze. This is a Canadian right of passage. We regularly strap our children to plastic without head protection and push them down hills for fun. Lol! It sounds like it wouldn’t be, but if you make it to the bottom of the hill, the urge to do it again and again is too much for us to fight.
The first time that I went snowboarding, it took me 3 hours to make it down the hill (once) due to wipe outs. I remember the next 2 days after that ( like it was yesterday) because I was so sore from falling and using different muscle groups. Hey, but once you get it, you always have it, just like learning to ride a bicycle. ;)