It helped on reducing traffic, spending more time with family, favouring local shops... Why we went back still is a mystery for me. Even if it was "working from a coworking space" or anything that was not the downtown open-space.
I remember reading articles about local politicians insisting companies and governments do return to office for no other reason than to have the workers spend money downtown for lunch. Not even implying it, directly stating it.
...and increasing valuation of office real state.
Because downtown city centers were missing out on office worker revenue and started giving incentives to companies who brought people back into the office. I 100% believe the reason we went back into the office at all was because of this despite all the talk of 'in-person collaboration.'