Never used to be a concern, there were tobacconists and newsstands everywhere. Usually had a bag or two laying around the house, but I liked the option to just pop in and buy something on a whim. Lots of good tobaccos to choose from, and it was nice to visit with the shopkeepers.
Then everything changed. Shops disappeared, prices went up, availability went down. Now I have to drive hours just to get to a B&M shop, and they often don't have what I want, so I end up buying something just to support them. Then I have to buy what I wanted in the first place online.
I vividly recall the moment that I realized everything had changed. I had run out of tobacco, and had moved to a new town, never imagining that it would be a thing to find a bag or tin of tobacco. I went looking, but quickly realized the unthinkable had happened and there wasn't anything to be had. Oh well, I thought, I'll just pop down to the drugstore, or supermarket and grab an OTC. Nope. Gas station? Nope - at least nothing that I wanted. It suddenly became clear that when a guy has to hunt for a pouch of Prince Albert or such, that the end was nigh. Waiting a few days to have something shipped to me was a life changing experience. My credit card still has bruises.
I'm not going to ever run out now. Ain't gonna happen. Even if the Zombie Apocalypse happens.
BTW - I've been reliably informed that zombies don't smoke pipes, so ... there's that. In case you were worried. I was. A bit.