There was an economic study done between smokers and non-smokers to determine which were larger drains of social spending. The assumption was since smokers would be receiving more medical care due to their unhealthy habit, they would be a larger drain economically. The researchers found that smokers die so quickly that their healthcare costs and pension costs were much lower than non-smokers.
I joined up when Reddit decided to end third party apps. I mostly browsed the front page of Reddit for interesting or funny things, but I noticed once I switched to Lemmy that the Reddit front page was just sponsored content and what the algorithm wanted you to see. I was actually interested in stuff on Lemmy and that made me want to participate rather than just scroll the front page.