A statue of the Buddha with its hands rested gently in its lap and its compassionate smile reminds us to strive to develop peace and love within ourselves. The perfume of incense reminds us of the pervading influence of virtue, the lamp reminds us of light of knowledge and the flowers which soon fade and die, reminds us of impermanence. When we bow, we express our gratitude to the Buddha for what his teachings have given us. This is the nature of Buddhist worship. Such statements only reflect the misunderstanding of the persons who make them.
All religions use symbols to express various concepts.
In Taoism, the ying-yang is used to symbolise the harmony between opposites. In Sikhism, the sword is used to symbolise spiritual struggle. In Christianity, the fish is used to symbolise his sacrifice. So to say that Buddhist worship idols is not correct. Many things seem strange to us when we don't understand them.