I think you're expecting too much from people while also overlooking the small things in life that people forget to acknowledge. These sayings still have meaning, despite if you appreciate them or get irritated by them. I feel that people are getting bored and desperate for a sense of meaning in this generation, to the point it's pathetic and embarrassing to even be a part of it. We're destroying things that shouldn't be and obsessing over shamefully naive ideals

These kinds of platitudes I can get behind.

I will often stick to platitudes in two situations. 1) I really don’t care one way or the other or 2) I know they really don’t care about what I have to say.

Platitudes and obvious jokes annoy me. I much prefer for others to say nothing, or better yet to listen if I'm trying to express strong feelings relate a sorrowful event. But I understand that people often feel compelled to help or to do something, so they advise or worse yet blame or just talk about themselves instead. I try to listen to others and then let them know that I'm listening to them and then hope that they will listen and talk to me as well.

They are annoying, I hate them.

I agree. I am not one for silence but I am also not one to say stupid crap for no reason, but I am, lol just not platitudes. When some one's hurting or whatever, the only things I say are "I'm here" "here's coffee" you want a hug?".

If you are gonna use platitudes either make up your own that make no sense, or just let out a stream of them like you where verbally constipated with adages. Because while you may be saying absolutely nothing, you can at least be hilarious about it...."The skinny rope gets the steeple!" "Fried rice isn't just for dinner, you know." "Two birds in the hand won't pack a lot of peanuts." I have a million of 'em.

I will admit to HATING "everything happens for a reason", since I don't believe it does. But I am not sure I follow how the other things you mentioned are "platitudes". I think more in terms of other things I hate, like "S/he is in a better place now" or, even worse, "God doesn't give you anything you can't handle".

If I feel I have to say something I will along the lines of Words will just diminish your pain/this situation

To me, platitudes are like small talk. Useless and I'm no good at it, either. Life sucks, sometimes. Deal with it and try to move on is my best answer.

Many people are uncomfortable with silence. I remember a comment from a small child that they sat with an older person and helped them cry. This is what we need, someone to help us cry (as I tear up.)

I have an annoying habit that I can't seem to break. In weird intense situations where "normal" people inject platitudes, I can burst out laughing, or just drop a very inappropriate one-liner. here is an example
"I loved him so much, then he married this other woman, she died of cancer, and he found out their baby wasn't his"
Me: "Well that's fucking depressing"
so honestly... I wish I were able to spit out platitudes sometimes

Are platitudes more like a cliche?