Just chiming in, I'm 28, American, immigrated to Germany. Can't speak for Lemmy but I migrated from reddit when they shut the APIs down. Just want a shelf stable Aggregate site where I can stay up to date on my favorite hobbies and periodically connect with other humans. A healthy political debate is good every now and then but I'm also in the camp that the answers for our current problems are well researched and pretty fuckin obvious so debates have gotten... Idk stale.
Generally Lemmy feels like reddit but smaller, less polluted, but also less connected with every niche major update.