I watched my friend play on a legacy server for like 10 minutes before I got a headache, after 30 mins I had to do something else. Literally the only reason a few of my friends play on legacy servers is because it's free.
So if legacy was free, emphasis on free, I'd probably play both just to play with friends. then legacy sparingly, like it literally made me nauseous to see how slow and repetitive it use to be