The old knobs had lots of issues - sometimes you'd have to turn them really far in order to open the door - and if you had something in your hands, well, you'd have to put it down to open the door. So these lever styles one are so much nicer. And the hardware being nickel looks so much more modern.
Last night, I heard one of the cats (Mercury, our trouble-making male) rooting around in the bathroom. He's always looking to get into something. He came trotting out with a narrow slice of plastic pipe from the trash - he spent all evening rolling it around and chasing it.