A surround sound system requires a lot of work to setup properly. Most people throw the speakers around the room and say they have surround sound. While at the barest levels they are correct, they do not have a proper surround sound. Headphones are easier, especially since most fake it well. For a room it can be a mess.
I have heard a real and properly setup surround sound system, had one for a number of years but when I moved the living room did not allow for a proper setup and the first time I heard the system when I faked it, I sold off the system and settled for a good Soundbar. If I cannot do it right I am not gonna waste the money.