Choosing a different location each day based on whim and availability is all very well for a solo freelancer, but once you scale that up to as many as two people you're going to start having problems finding space and private places where you can talk, call clients, etc. etc. Once you start getting to 3 or 4 people, forget about it. And what about people who want dedicated hardware - a keyboard, monitor, etc?
WeWork has a valuable proposition for those groups. Rent out a small office while you're in the early stage, have everyone in a room with breakout meeting rooms and phone booths available just outside. A kitchen where you can get a coffee, prepare food, etc. etc.
I still think WeWork is an insane proposition because they cost a lot and they're not that great, but let's not pretend they offer nothing over a local coffee shop.