I know one christian who believes that when people die, they are in heaven, waiting for the future when they will be returned to the new earth in a physical body again.
But here are a few beliefs about cremation I found on wiki and reasons why certain faiths don't believe in it. I thought JW's were the only christians who believed in a bodily resurrection but they aren't and what's even more interesting is that most christian religions forbid cremation because it was pagan, yet JW's who accuse other christians of pagan practices w/ holidays don't think twice about cremation.....
The Catholic Church 's discouragement of cremation stemmed from several ideas: first, that the body, as the instrument through which the sacraments are received, is itself a sacramental, holy object; [34] second, that as an integral part of the human person, [35] it should be disposed of in a way that honours and reverences it, and many early practices involved with disposal of dead bodies were viewed as pagan in origin or an insult to the body; [36] and third, that it constituted a denial of the resurrection of the body. [37] Cremation was forbidden because it might interfere with God's ability to resurrect the body; however, this was refuted as early as Minucius Felix , in his dialogue Octavius . [38]
In Orthodoxy, cremation is a rejection of the dogma of the general resurrection, and as such is viewed harshly.
he Orthodox Jews have maintained a stricter line on cremation, and disapprove of it as Halakha (Jewish law) forbids it. This halakhic concern is grounded in the upholding of bodily resurrection as a core belief of traditional Judaism, as opposed to other ancient trends such as the Sadduccees , who denied it. Conservative Jewish groups also oppose cremation.
Criticism of burial rites is a common aspersion in competing religions and cultures, and one is the association of cremation with fire sacrifice or human sacrifice .
Christianity frowned upon cremation, both influenced by the tenets of Judaism, and in an attempt to abolish Graeco-Roman pagan rituals. By the 5th century, the practice of cremation had practically disappeared from Europe.
( So it's very interesting to me that even so called pagan christianity according to the JW's had rejected cremation as a pagan practice, yet Rutherford or somepoint in the WT, the GB decides it's okay to do it. In the bible, God's people were buried not cremated as well. )