So basically, the op logged into Facebook, saw people complaining about having a hard day as a SAHP even though she feels her life is harder...
News flash op, it happens all the fucking time with every single subject in the world, here are a few to demonstrate,
Facebook friend - my child has a cold/d&v bug I'm knackered, I hate seeing them Unwell.
Another person - I'm sick of people moaning about everyday illnesses, my child has cancer, Aibu to think you should count your blessings?!
Facebook friend - my job is hard, I'm tired and I hate my boss, I only get minimum wage.
Another person - well boohoo, I got made redundant and now I can't feed my kids or pay my rent, I wish I had your low paid, shitty job.
Facebook friend - my husband didn't put the toilet seat down, what a shit.
Another person - my husband is screwing his secretary and hits me when he feels like it, I wish toilet seats were my only issue.
Do you see?! Everyone is different, life is different, we cope differently and there will always be someone worse off and better off than you. Some people express this via the medium of Facebook. Who the hell are you to judge if a SAHM has had a rough day juggling childcare, food prep, home admin, housework etc? The last time you vented to a friend about something, they could have been thinking that they have it worse. Get over yourself.