Here, there are 3 of us, DSS is at his mum's most weekends though so not 3 full time.
I do all of my washing and drying on a Saturday, and will have two loads of normal washing plus occasionally a load for DP's white work shirts (though he has loads and we leave them until we have a machine full, so that's only every few weeks as he's not full time).
I suspect my relatively few loads is due to DSS wearing his clothes for approximately 30 years before deciding that they probably need to go in the wash. Honestly, judging from what I see when I'm folding washing to put away, he changes his t shirt once a week, jeans less, and underpants once a fortnight. He's 17 and was definitely brought up better than that.
DP has probably two pairs of jeans plus trackies each week, me the same, plus underwear daily and maybe 4 tops a week (I don't wash hoodies every single day for example - or at least not at the moment when I don't do anything).
So yeah, washing isn't too bad for me. It was worse when DSS was at school as this was before he turned into a disgusting older teen and actually put a clean shirt and undies on every morning, plus clothes after school.