I have never done it, but I know that the insurance provided by my employer will replace lenses yearly and frames+lenses every other year. So I am assuming that putting new lenses in old frames is definitely a thing.
I know the last time I got a new prescription, I just used Zenni and got a few pairs to just keep them laying around at different "stations" throughout the house. That way, no matter where I sit down, I will have some glasses within reach.
I have an older frame that I would like to do that thing were getting lenses only, but that is the one pair of glasses I cannot find. I have been looking for them for several months, but I have absolutely no idea what I did with them and it is really bugging me.