I torched my linkedin account a while back after recruiters wouldn't stop hounding me. I also despise social networks of all sorts so that contributed to my decision.
Before I torched it though I tried a little experiment. I left my tech skills in place, but also added things like "Blacksmithing" and "Former POTUS" as my skill set. I also said "Do not contact me" and "I hate recruiters" and something along the lines of "if you contact me, you clearly didn't read my profile" - the spam seemed to increase for a while before I finally deleted the profile completely.
I never made a dime or had any positive experience with Linkedin. Just recruiter spam and "friends" begging for endorsements... so I don't think you're missing out on anything.
Before I torched it though I tried a little experiment. I left my tech skills in place, but also added things like "Blacksmithing" and "Former POTUS" as my skill set. I also said "Do not contact me" and "I hate recruiters" and something along the lines of "if you contact me, you clearly didn't read my profile" - the spam seemed to increase for a while before I finally deleted the profile completely.