Well you CAN kill people so what could be the problem? This is the problem.
The good:
The weapons arsenal is amazaing and the driving is exellent, great music and sound and the radio fun to hear, the missions are well done and the plot is nice (but not too sophisticated), you can roam free all around Vice City with cars, helicopters, bikes and boats, the action is great.
The bad:
Low AI which makes me sometimes laugh and sometimes cry, the all game is around driving and killing and there is not very depht which cuts the game's value, the graphics are dated but not too ugly, doesn't offer new things that wasn't in GTA III.
Finnaly, I recommend the game for everyone if they have extra money or just like the formula and needs something to make them busy 'till what game they want comes out. The reall problem here is it's only around killing people but hey it's fun to see blood...