Answers above are fantastic! Of course different people have different answers. For me, I prefer team sports.
First of all, generally playing time of team sports is longer than individual ones. For example, a football game could be as long as 90 min even if OT is not considered. But hardly any individual sports could be that long. I mean, this could be an general regular. Of course, exceptions exist. This is easy to understand because in team sports, all the memebers share the consumption of their strengths, which makes everyone last longer. For me, respectively, longer time means more happy because I always have such the feeling that sports really bring me some kind of original happiness.
Also, communication is an important element during team sports. Just like the teamwork discussed above, communication could determine the victory. Take me for example, I love playing volleyball. During the games, sometimes we shout to communicate, sometimes we just use simple gesture, sometimes we don't use anything, but we know what other teammates would do. This kind of rapport, or we can call it tacit understanding, not only strengthen our friendship, but also raise the level of the matches.
My last point is team sports are much more complicated than individual ones. Apart from commnication during the games, strategy, psychological factor, taking advantage of the game rules appropriately, these are all the factors that we must consider during the match. On the contratry, individual games put more emphasis on skills and talents, which directly make individual sports could not be so popular as team sports.
Okay, that's my points of view. For me, I like playing team sports myself and watching team sports!