I *usually* make the bed before I open the house up, because we have huge windows in our room and when I open the curtains you can see if our bed isn't made lol. Although my definition of "make the bed" varies sometimes it means throw the doona over the bed and squish any lumps. Other days it means straighten and tuck in the top sheet and then throw the doona over the top.

But when we lived in a house with 'normal' sized windows, I usually wouldn't bother LOL. Unless I was in a pedantic mood.

It does make the room a look neater, and when i do make the bed nicely (straigten the sheets too not just check a doona over the top hehe) I always look forward to climbing into nice, flat, crisp sheets, not crumpled left-all-day sheets.