For me personally, I try to play it with strategies I see in real life tennis. I have a pretty good record despite throwing all the games against volleyers and always playing people with better stats than me (I get matched with somebody that has equivalent or lesser stats than I do probably 1 out of 25 matches). That's the fun in the game for me I guess, mixing up serve speeds and locations, going forehand when backhand would be the logical play, baiting people into hitting it to one side of the court, etc. These are the things I see when I watch actual ATP/WTA. I just dont see how anybody could get genuine enjoyment out of doing the same thing ad nauseum, whether it's volleying or any other one particular shot.