Keep them? Yes. But use them? Hardly ever. I've found that you can google nearly everything. Most of those books are obsolete the minute they come out. The only reason I keep them is that I hate to throw out a book. And who would want a manual for old technology? (Meaning last year's.)
Considering that young people don't read print newspapers, and lots of people now read books only on electronic devices, I wonder if there will be any future for print media. Maybe this should be a separate topic?
You are still able to skip down the street.