Up or Down and Why?

I live with two males. 
Does putting down the commode seat still have meaning? 
If so, what does it mean?
Is it a display of respect to the lady using the same commode? 
What is a lady? 
What is a gentelman?
Why should men put the seat down? 
Should women put the seat up for men as a show of respect?  
If not, why? 
I miss walking into the bathroom and finding the seat down. 
I don't like to put the seat down. 
I don't like touching it. 
Maybe men don't like touching it either. 
Perhaps this is why urinals in houses are installed.
I'm wondering if these men I live with don't respect me, or are they oblivious to commode seat protocol.
Just a thought.