I don't know why but I can't wear the same pajamas two nights in a row either. Hmmm. It's not because I was uncomfortable or anything like above but if I put them on the next night, I'm just not relaxed. It doesn't feel fresh. I can wear a pair on an every other night bases but usually not more than two times for the same pajamas before they go in the laundry.
I usually don't wear a full flannel set-too hot! In summer I wear cotton bottoms with pajama tanks or mens ribbed tank tops. I will also wear a regular t-shirt. In winter I'll wear flannel bottoms, sweat bottoms, a thermal shirt or a t-shirt. I get all comfy just thinking about it.
My man usually gets exasperated with me because on my corner of the bed I usually have a few pairs of pajamas piled up because I've worn them so they can't go back in the drawer but I haven't worn them twice so they're not ready for the laundry. I know...I'm weird.