this is a very interesting question i'm ngl. but i think i'd have to say no! instead, i'd probably tell myself not to make certain decisions i did during my time on srp.
i've met many people during my time on srp, good & bad. i met my closest friend who's like a brother to me (we've known each other for almost 8 years now), & became part of a friend group i can't imagine myself without. they're all like family to me. :') so, no, i wouldn't stop myself from joining, because if i did, that'd mean i wouldn't have the bonds i have today.