Um, Facebook...I dunno. Posting anything but positive comments can only come back to bite you, so I would try very hard not to even comment on anything if you can help it. It's that old, "if you can't say somethin' nice, don't say nothin' at all"-Thumper.
I am not a fan of this so I am rarely on it. In the very few things I have checked up on, I usually feel bad that I am not included, which just feels like torture. And why would I want my thoughtless kids to have full access to torture me? They already are putting me on a shelf to dust off and bring out when it suits them. Nothing would make them happier than if I was not so involved in their lives and had one of my own. It is different times I guess.
Trying to stay abreast of what is going on with Instagram & Facebook is just not for me. My kids know I am rarely on there so they actually call me and speak to me, which I prefer. If they make mention of a trip or fun activity, they will also mention there are pics "out there" if I want to see them.

This generation of young adults are living in a whole different way from when we were younger.
It is hurtful to feel left behind after you gave them so much. This I understand. This is something that they don't want to hear about, trust me, I've tried and they only feel guilty and call less because they don't want to "get into it" regarding their living their own lives. So I have to plan short activities and treasure the little time I am allowed & call it good. For me and my kids, that's all there is so I have to accept that. Sure it hurts, my life got smaller when theirs got bigger. It is why people call being a parent a 'thankless job'. You don't do it thinking you will always have that most important role you had. It is sad, It is something I struggle with too. But is is something we all have to do eventually; pass the baton to the next generation. Sometimes it really stinks though...

As to the chatty, negative cousin, that you can limit and learn to steer the conversation to more pleasant things. Have you tried talking about your common ancestry for instance, as a jumping off point to other more interesting topics? I have used Ancestry.com for several years and it is a great conversation starter, especially with relatives.

You & I seem to have a great deal in common right now. I am also struggling with being a life long giver, kind, generous and caring beyond measure. It is my nature as it sounds like it is yours. My saving grace was I found a place to volunteer, a hospital, and it saved me from myself and my depression and actually lifted my mood and gave me a change to meet lot's of people.

Have you ever considered any of these things?
Thinking of you and wishing you Peace in your heart ~