I do enjoy bouldering because of its simplicity (little gear, no need to coordinate with others), but sport climbing gives me something that bouldering does not

I do enjoy bouldering because of its simplicity (little gear, no need to coordinate with others), but sport climbing gives me something that bouldering does not. Maybe it has to do with flow, as it's easier to get into some kind of flow on a 15 meter wall compared to a 4 meter wall. I'm not sure what exactly it is though that makes sport climbing more attractive to me than bouldering. (I admit though that due to bouldering's simplicity, I do it much more nowadays compared to sport climbing...)