Yes, since it's introdution in 1964, the 10/22 has remained a top seller.
The Ruger 10/22 is also my favorite .22 rifle. Over the years I've had four of them, 3 of them got sold or traded for somehting I thought I liked better at the time for what ever reason.
I've also had the Henry lever action Golden boy, the Marlin, Remington and Savage .22's in the past also, but kept coming back to the Ruger 10/22.
My last puchase was the all weather version, black stock with stainless steel barrel, topped off with a Simmons 3X9X32 with low mount rings and a sling in 1999.
Being very lightweight and compact, it's a pure pleasure to lug around in the woods all day. It's quite accurate with standard velosity 40 gr. bullets, it does headshots on "frozen squirrels" at 25 yds., kills rabbits at 75 yds., and is devestating on tin cans at any where between for the average Joe.
It's also the only .22 rifle currently left in the gun cabinet, the rest are all long gone.