Can not believe people are bulk buying sanitary pads?

So I went to the shops the other day I had to go in to like 5 shops and they was all sold out of sanitary pads because people are bulk buying?? I’m sorry but periods are once a month you should only need 2/3 packs to last a few months and that is probably too many. I was on my period there was no sanitary pads and no tissues anywhere for me to buy to use! How selfish can some women be and what about the children that may have just started there period it will be a scary time for them already and to not have the necessary products is disgusting.