Correct, Buddhists don't, or rather, are not supposed to worship gods. The Buddha himself was merely a reluctant teacher who din even wanna teach at first. He made it abundantly clear to everyone that he should'nt be treated as god. Originally, bowing to the Buddha was a form of paying respect in his culture. Its not worshipping. However many people today including lay Buddhists turned it into god worship, asking for forgiveness etc, against the wishes of the Buddha. The Buddha is dead and gone. He cannot forgive anyone or save them from their problems. He is not a god.

From the Buddhist text, nirvana is neither existence nor non existence. Unlike Hinduism, Buddhism does not believe in a soul. After you attain nirvana, with no soul and with neither existence nor non existence, there is no more "you." It can't be described as an afterlife. But if you have not attained nirvana yet, your consciousness will transfer to another body. That is a kind of afterlife.

Sorry if this strayed from the original topic.