

The one who’s hard to understand is you, with your complete lack of punctuation. “/s” is extremely common and pretty much everybody understands what it means. If you didn’t know until now, no biggie, now you do and all is well.
And to answer your question, if a comment or a paragraph ends with an “/s”, then you can be sure the author was being sarcastic in that comment/paragraph.
If there’s no indicator, it could still be sarcastic or it could be serious, use your own judgement.
So no, not everything should be taken as sarcasm.
I understand that pears are prayers, but what are the thoughts stand-ins? It’s the tater tots thingy?