Before leaving Twitter, consider archiving your Tweets on the Internet Archive's Wayback Machine. https://help.archive.org/help/how-to-archive-your-tweets-with-the-wayback-machine/
How to archive your Tweets with the Wayback Machine – Internet Archive Help Center

@dangillmor
All of them? That seems obnoxious, both a burden on Internet Archive and an overvaluation of 90% ephemeral tweets.

Individual tweets of genius? Sure, go for it. I mostly use the Wayback Machine to archive Twitter mis-steps by assholes, the things they will later claim happened because they "were hacked."