James, don't fucking go.
There's neither need to respond to, nor even to read what specific posters write. You have a button - I think - to take care of that, and problem solved.
I've done what you contemplate three times (over a year hasn't been an unusual 'divorce'), but the only person losing out is oneself. Sometimes, others also miss one's presence and communication continues elsewhere, but it doesn't feel quite the same because you can miss the value of conflicting points of view that are not always couched in offensive manner.
My own solution has been not to click 'ignore' but simply really to ignore and not read posts from people I consider to be stupid or just argumentative. If you don't respond they run out of air and realise what dicks they are fighting a shadow that refuses to see them.
So I ask you, old photographer to young photographer, please reconsider and don't diminish LuLa by leaving. Anyone can see just how valuable an input you can and do make. Let's not blow all of that and make the rest of us the poorer for it.
Please?
Rob C