> - Thousands of tickets that would probably take 30+ software devs 100+ years to implement

I feel like the company I'm working for has a reasonable attitude towards Jira, and they recently just batch closed all tickets that were older than some date in many projects. So you'd have to actively re-open tickets you had created to keep them alive, if needed. Great decision IMO.

It's an interesting exercise to be forced to deal with old tickets you've created. It gets you thinking.. "well, this thing should probably be done at some point, but then if it's actually important we'll probably think of it again and can re-create the ticket then". Might give you experience that encourages you to be careful when creating new tickets too.