As has been said, at less than 400 plays you basically haven't even played the game, which is quite a shame. The gameplay is slick, the interface is totally customizable, the community is highly active and growing, and all the content is player-generated and player-moderated. As far as rhythm games go, osu! is the place to be right now, and it's showing no signs of slowing.
Since you're obviously still a little curious, perhaps it would be better if you told us what you don't like about the game.
Try other modes! Taiko: Drum and Snare! Be an ultimate drummer! Catch the beat: Catch all the falling fruits! Be a lightning quick catcher! osu!mania: Fancy keyboard with dropping notes! Be a button mashing master!
I Have a Dream... that one day I shall rank my only map. Stream Speed: ... 100 110120130 140 150 160 170 180190 200210 230 250 270290 ... Activity schedule (UTC+7): 19:30 ~ 22:00 Mon-Fri || 9:00 ~ 23:00 Sat-Sun