Yes, absolutely! My family and close friends are all on WhatsApp, so I no longer use the messenger. I keep my account mainly for the JREF page (which we update very infrequently). I do check in every week because, sadly, a lot of former JREF members (all of them well over 40

) post there and no longer frequent our website.
In fact, I have been consulting with
@Uncle Frank whether we should start a JREF FB group (in addition to the FB page) but I couldn't bring myself to sign up yet.