I would think that percentage would certainly be a catalyst for problems, especially if you are home. I can see it being a form of addiction to the internet, be it social, porn, hidden sites, support sites, whatever. If it bothers you, then it's a concern.

I am on FB all day - not flirting with other guys, not looking for anything. I just enjoy being in contact with quite a few people, which otherwise would be impossible because of distance and/or work
Schedules.
We make each other laugh, talk about news, kids and other stupid crap. One of my friends is an artist and i love seeing her work posts.
It does not always have to be harmful, but many times it is.

I think being on social media and hurting a marriage are two different things. It all depends on HOW the social media is being used. Is he Facebooking old buddies and playing games, or connecting with old flames? Is he on Snapchat, taking pics that disappear in two seconds? It does not mean a death sentence but I also think social media has made the possibility of cheating a lot higher and accessible.

It's all about how it is being used.

My husband kept in contact with other women he had inappropriate connections with. I looked from his phone and caught him. He wasn't on FB anymore than I was. But I wasn't trolling for old flames from HS. He got caught before it got too bad, but I feel betrayed. We are in MC And he realizes that these were affairs even though there was no sexual intercourse.

My partner should be investing their time in our lives and related matters more than anything else. If they where to spend so much time on FB or other social media, it would raise a red flag to me that there might be a valid reason for me to be concern and something I have the fairness to investigate. I get social media and a persons needs to their own comforts, but in a relationship, its a team that is the priority investment and not the person or their needs.

I mirror Christopher310's comment, well said.

Thank you all.

Very helpful

I would think 6-8 hours a day on FB is excessive. I mean, how many links can one read in one's News Feed? I pop in maybe 15-20 mins. every few days to see what the latest hubbub is about and it's good enough. Your husband must have a lot of FB friends and has a lot of interests, has "liked" a lot of pages!

Wait. I am the husband, she is my wife

My ex wife was on Facebook 24-7 her iPhone never left her hand. Notice I say Ex. She was embroiled in an emotional affair at first and then full blown. I've read many horror stories about Facebook and what the hell goes on there. It just makes affairs too easy is my honest opinion. I deleted my account not long afterwards I'm thoroughly disgusted with that site...my personal opinion of course.

I agree with Kbbcoop.......I think Face book is bad news.
It seems like a hear a lot of cheating stories from face book.