To those who have posted about ghosting - why would you not message the person?
Dear X,
Your rant during yesterday's phone call was the last straw for me and I am ending our friendship. I know we've been pals for 25 years, but I've reflected on our friendship over this time and realised that I don't actually like you much and probably never really have. I guess I just kept it going out of habit, and because our mothers are friends. But in reality you are a sulky, spiteful, selfish and jealous person, who has to be shamed into buying a round or sharing your cigarettes while taking from everyone else, and you have the nerve to complain that I didn't call you often enough even though you rarely called me, just complained about your phone bill. You haven't a kind word to say about anyone, and you rubbish anything new I get because you didn't think of it first. I have many nice, kind friends to spend my time with and I don't need your dark cloud hanging over me.
It's over, sweet cheeks.
Would that have been better than ghosting? Yes, she would certainly never have spoken to me again (result!) but is honesty always the best policy?
As it turned out, it took her over a year to notice as she never called me except to berate me for not calling her, which is why she eventually phoned my mum's house, but I had moved out by then (25 years ago now). My mum said she'd get me to phone her but I never did. Why would I? To say the above?
OP, please don't assume your friend thinks like this, but as you will see from this thread, lots of people vanish out of the lives of their friends and it's not always a reflection on the friend. For some people it's a way of coping with some trauma, others many feel their lives have just drifted apart.
As a PP said, there is no established etiquette for ending a friendship where there is no obvious falling out, But I'm not sure if being honest is always the way forward. Ditto lying. Ghosting feels kinder when your doing it, but I appreciate from the threads that appear here that's not how the receiver views it.
Concentrate on the friends who like and appreciate you OP, they're the ones of value.