I know I commented already, but your posting really just gave me a bit of hope for the human race. For the past several years, I thought humanity had died. Your heart is in the right place. You actually don't need to worry so much about it, because it appears that you're the kind of person who will do the right thing and you'll know when you've crossed that bridge.
Same here - didn't expect this much resonance. All the responses have been so inspiring and made me love humanity even more. Thank you for the kind words. I'll pay it forward.
I was on LinkedIn for years. I quit a couple of years ago and have not regretted it one bit. I hasn't resulted in a single sale or new client for me. It's really for salesmen and headhunter and perhaps government officials, not technical people.
I'm technical. I've gotten numerous interviews and a very good job through LinkedIn. I don't post, I don't read posts. My mere presence there with somewhat up-to-date information is valuable as an easy place to connect with people who are looking for individuals with my particular experience.