Funny enough, my experience with those two has been the same as with “at the end of the day”. I guess we really do move in different circles!
And, sure, she died because her head hit the curb when that purse-snatcher knocked her down — but that happened for a reason: he wanted to take her money! And he succeeded! Isn’t that wonderful and reassuring? It’d be troubling if he did that for no reason; but, instead, he was accomplishing a goal!
This is so true. Someone I work with says “…at the end of the day” in a bullying tone that’s dismissive of anyone’s concerns.
‘Look before you leap’ / ‘He who hesitates is lost’.
‘Many hands make light work’ / ‘Too many cooks spoil the broth’.
I wanted to offer a ‘pretty unique’ example… 
I can’t think of a better way to communicate fatalistic acceptance of unpleasant circumstances that aren’t easily changed.
“It’s all good” doesn’t bother me, and if I look back over my own history, I’ve probably used it fairly often to indicate that I’m not bothered by the overall outcome/circumstances being discussed.
OTOH, “everything happens for the best” is demonstrably bullshit. There are plenty of things that happen for the worse/worst.
I came into the thread to say this one. After watching my sibling with a laundry list of handicaps struggle for so many years, after nearly dying as a toddler – this one really makes my blood boil. Makes me want to grab a hammer from my toolbox and help the speaker get a lot stronger.
“It is what it is” Oddly enough I like this one, it’s just way overused. Sometimes you have to stop hoping for better, and live in the world as it is.
Which reminds me of this one. It’s a frequent response on social media when someone reports a sad event in their life:
“Prayers sent.”
Yes it would be more accurate if the platitude was actually “What doesn’t kill you will possibly permanently break you”
I also hate “It gets better”.
“It’s human nature.” Usually used to justify war or selfishness.
“Bless you” when I sneeze. Jeez, it’s just a sneeze for crying out loud.
“Thank you for your service”. You can have a chestful of medals and a Purple Heart and still be a terrible person. Everyone performs a service to society, why single out a single profession for endless praise?
“They fought for our freedom”. Not really. In WW II, sure. You could even make a case for that being true for Korea. Vietnam, Afghanistan, Iraq- not so much.
Or, “What doesn’t kill you brings you one step closer to the inevitable.”
I was at Lowe’s last year, looking at some stuff in the electrical aisle. I sneezed. A guy in the adjacent aisle (whom I couldn’t even see) yelled out, “Bless you.” 
I hate the “Bless you” so much that I will try and suppress my sneezes when I’m in a public place. I cringe a little and “wait for it” if I am unsuccessful in suppressing it.
To be honest, I don’t much care for platitudes.
“What doesn’t kill you” hurts really, really bad.
All the ladies in my office say “Bless you”. I’m the only one who says “Gesundheit”. Living in the Bible Belt as I do, I feel waves of disapproval wafting over me every time, but possibly that’s just my imagination.
This one needs context. It’s certainly not universally applicable, but for children who suffer terrible ostracism and bullying for their sexuality, they really do need to hear that it does get better: as they get older and enter adulthood, their lives will improve.
It’s a new one, but right now anything to do with the correct way to make a Molotov cocktail.
I used to have a coworker who would respond “Hail Satan” in a deadpan voice whenever someone sneezed near him.
Ha! I wouldn’t dare.
I never sneeze singly, there are always at least a dozen sneezes. My gf escalates from “bless you” (lower case “b”) to “gesundheit” to “what the fuck is wrong with you?” by number three.