Your Opinions on Caching

My webpages are pretty lean and are scoring 100 in Google's PageSpeed test. They load in less than one second.

Your opinions & advice? — Should I do some caching in my .htaccess to speed them up even more? Or should I just leave good results alone and not tamper with them? (I'm not high-tech and might do something harmful) Sample page: https://www.jimfeeney.org/broken-interpersonal-relationships-healed.html

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