People against pot use- your reasons?

I only think it’s silly ( but totally none of my business) when getting high is used as a replacement for actually going out & doing things, having fun etc to make sitting in a room fun. That does strike me as a bit dumb. But it’s not as if I don’t choose stupid stuff on occasion myself. The only other thing that led me concerned was the case of my Uncle Pat. He loved pot, loved to grow it & smoke his own crop. He never did any other drugs. Didn’t drink alcohol not even coffee. But he did smoke weed everyday from the age of 12- when he died in his 50s. All my childhood & a brief part of my adult life he was in I thought my uncle was a bit weird. He always spoke slow & seemed kinda dumb. I loved this man very much. But other than working he acted like he was teenager. He didn’t have a disability of any kind. So I was always cautious of perhaps the type of marijuana or extended use, improper smoke ventilation etc it’s never something I forgot. But I still don’t care for it to be illegal. Cannabis has provided much relief for many different ailments to people I personally know. So I am happy for its positive impact.