If you want to play the game for fun then by all means go ahead but, like I said, ANY competitive tournament you play for smash will play with those rules to balance the game. Items are broken in the competitive play field. The way the game is now is best for it. People want to see the player skill at fighting and not at using items. If you want to play using items, then go for it, you won't be consider as good of a player with items on as having them off. Its just like someone using Ubers in Pokemon. People ban Uber, some attacks and items in the Pokemon games. Still they are not playing the game the way it was meant to be played but in the competitive play field, people make rules to make it better and less random. In Pokemon, they are just fan made rules and don't mean much but, in ANY smash game, people who run the tournaments make the rules and competitive players follow them.
What I mean about one sidedness is one player get the star, heart, hammers and smash orbs. No one in the competitive play field wants to play like that. So if you play for fun, go for it. Us competitive players play with those rules. Yeah we can play with items and the randomness of the items and stages. Its just too much to watch out for while avoiding bombs that drop in and fending off our opponent.