I am a huge slippers wearer (spend most of my time in my house and wear them 100% of the time inside), tried tons of brands, and all seemed to be worn out, stinky, falling apart after a year's worth of wear....
...until about two years ago I discovered what was the perfect solution for me. I wear warm fuzzy socks combined with Crocs clogs (the kind without the holes). This way I can wash the socks after a few wears (keeps them from getting too dirty/stinky) and the crocs provide extra cushion, grip, can be worn outside for getting the paper, provide extra warmth in the winter compared to just the socks, and seem to hold up really well (no signs of wear after 2 years). I make a point of not wearing them outside other than a quick trip through the driveway, so they stay clean enough to wear around the house.
Even if one is not a huge crocs fan, I'd recommend something similar (eg, cozy socks of choice-wool, fleece, etc, with choice of very cushioned, slip-on, but heavy-duty shoe) for serious slipper wearers.