I've been working from home since March 2020, and I like it so much that I've decided to continue working from home even after our office opens up. With reduced hours starting this year and no commute, I may even put off retirement and continue working from home until I'm 70. Makes it so easy and I need that extra money for feeding my menagerie of cats and dogs.
In my case, the change of location has little to no practical effect. My office is filled with introverts and we didn't talk all that much even when we were in the same room. I mostly used IM to consult with my co-workers who sat just a few feet away from my desk. All my work has always been done through the computer because my clients are all out-of-state.
Home has a few disadvantages: more noise, more commotion, although in some ways that's good too because I'm forced to get up more often to open the door for a dog that wants out, a cat that wants out, another cat that wants out, a dog that wants in now, etc. These interruptions don't outweigh the advantages. I hadn't realized just how much I was drained by the 45-minute drive to work and another 45-minutes back until I wasn't doing it anymore.
Once things get back to "normal" we may have a few mandatory office days for company meetings, but from comments I've heard, only a few people are really interested in returning full-time. I'd say easily half to 2/3 are going to work from home more often than not.