Did Gautama Buddha really want to create a new religion It seems Buddha was born in Indian culture , and was disillusioned with the rampant meaningless rituals and hypocrisy of the prevalent religion , Hence did he preach a new religion?
as Ven Yuttadhammo said this question definitely generates more opinions then answers. I will attempt to show what the Buddha himself talks about the goals of his creation.

Maha-parinibbana Sutta: Last Days of the Buddha
http://www.accesstoinsight.org/tipitaka/dn/dn.16.1-6.vaji.html

"For the Blessed One, O Lord, spoke these words to me: 'I shall not come to my final passing away, Evil One, until my bhikkhus and bhikkhunis, laymen and laywomen, have come to be true disciples — wise, well disciplined, apt and learned, preservers of the Dhamma, living according to the Dhamma, abiding by the appropriate conduct, and having learned the Master's word, are able to expound it, preach it, proclaim it, establish it, reveal it, explain it in detail, and make it clear; until, when adverse opinions arise, they shall be able to refute them thoroughly and well, and to preach this convincing and liberating Dhamma.' [23]

"For the Blessed One, O Lord, spoke these words to me: 'I shall not come to my final passing away, Evil One, until this holy life taught by me has become successful, prosperous, far-renowned, popular, and widespread, until it is well proclaimed among gods and men.' And this too has come to pass in just this way. So, O Lord, let the Blessed One come to his final passing away, let the Happy One utterly pass away! The time has come for the Parinibbana of the Lord."

As we can see the concept of a thriving fourfold assembly(Bhikkhus, Bhikkhunis, Lay disciples of both genders) was an important goal of the Buddha's wandering for 40+ years. In this section above Mara is trying to get the Buddha to renounce his final body and exit stage left, years before the Buddha told him he would not do this until the holy life and the fourfold assembly are prosperous and now towards the very end they are.

Now did the Buddha want to create the "ism" that is Buddhism? That is where personal personal debate comes in and goes beyond the scope of this question. Personally I think much of the "ism" today is far from the original teachings and vision of the Buddha, other's may think differently. I personally don't think of my dhamma practice as "buddhism".. I like to use what the Buddha himself called his practice: 

the name the Buddha gave to the spiritual path he taught was "Dhamma-vinaya" — the Doctrine (Dhamma) and Discipline (Vinaya)