If it's any consolation, I didn't use vi for close to 20 years, using pico/nano instead. It wasn't until I started working with huge flatfiles that needed hundreds of lines of regular expression parsing that I learned how to use vi effectively.
I'd say that if you really need those advanced features that vi is the way to go, but admittedly pico/nano is a lot easier to use otherwise.
As for what I use that's old, I have a Dolby-AC3-capable laserdisc player and more than 500 titles and an S-VHS VCR with about 850 titles on tape, I'm hesitant to buy a laptop lacking an optical drive (though my pickings are quite slim these days), I'm still using a Gateway 2000 "Anykey" PS/2 124-key macro-programmable keyboard manufactured by Maxiswitch, the vast majority of my computer monitors are 4:3 ratio, I still have my SCSI Jaz2 drive, my SCSI Zip drive, a couple of 3.5" floppy drive, and one 5.25" floppy drive laying around, and my daily-use TV is a widescreen, high-definition tube . It works great! Cost me only $40! And at 126lb, no one is going to steal it. In fairness, it fits the built-in TV cabinet perfectly and at the time a similarly-sized LCD model was close to $600, so it made sense to go with the tube.
I don't necessarily equate old with obsolete. Obsolete is when it doesn't do the job that you need done satisfactorily. In that sense my 20 year old beater $700 pickup truck with no straight sheet metal and worn-out steering is fine, as I generally only drive it when either I need a truck specifically, or when one of the cars is out of commission and I need basic transportation in the interim. I'm typing this on a five-year-old netbook with an Atom processor, and I only recently replaced my Xeon-Gallatin-based dual processor workstation from a decade ago because the thing croaked after a power outage and doesn't want to come back up. It was a great box for a long time, even with only two cores. It's been replaced with a newer-used dual-quad Xeon workstation that I expect to use for another decade as my workstation and the whole-house server.