I'm not a slippers or robe kinda gal.
In my mind (& this is just me & has no bearing on actual reality!

), robes & slippers are for older/elderly people.
I have a lightweight robe that my mom gave me that I used in the hospital when I gave birth to our younger son. I can count on one hand the number of times I've worn it here at home though.
My mom loves robes & nightgowns & slippers. In the evenings, she's usually wearing her gown w/ a robe & thick socks & slippers. In the mornings, when she gets up, she puts her robe back on over her gown until she gets dressed. She's given me a few pairs of slippers over the years as well. I have one pair that I keep in the bottom of my closet "just in case"...
I also don't like nightgowns & prefer PJs.
I usually sleep in a tank top. If it's really cold, I might also sleep in some long PJ pants.
Our master bathroom is connected to our bedroom, so I don't have to worry about taking a shower & not having a robe to walk back to our bedroom. A towel works just fine!
In the winter, I like fuzzy, thick socks for my feet. In the summer, I'm barefoot!
I can't stand wearing shoes in the house - even slippers!
I do love my loungewear though - Around the house, in the winter, I'm normally wearing either yoga pants or PJ pants w/ a sports bra & a long-sleeved t-shirt. In the summer, I wear comfy shorts w/ a sports bra & a tank top.
EDITED TO ADD - For the poster who said the German word for "slippers" translates to "house shoes" - Growing up, both my grandmother (my mom's mom) & my mom always referred to slippers (& mom still does actually) as "house shoes"! I probably refer to them that way as well since that's the way I grew up.