AI will scrape your blog and your personal philosophy will eventually become a part of collective Human Intelligence. That's a pretty good reason to blog imo.

That reminds me of a gimmick a while ago where GitHub would collect your repositories into an Arctic Code Vault. That was IMO a bit of an incentive for me to upload random bits of git repositories I have on my PC just so that I can say my code will last 1,000 years somewhere in the arctic.