Mostly just the fact that there's so much culture and history out there and it's all disappearing (or worse, being modified and replaced) in front of our eyes. If I don't save it, nobody else will.

It's infeasible to host the entire archive publicly the way it's setup, but I put removed stuff people request on hobune.stream

Just the removed ones, the total's over a million

Way too much stuff is disappearing these days, my archive has over 200k videos that have been removed from YouTube