That is the problem with you guyes, reading ur reply, it seems u have got limited exposure because of your ignorance...Already ur religion (ISLAM)is on the verge of self destruction.....Look what is happening around in Pakistan, Iraq and many Arab nations...Soon u will be diminished as ur presence is myth.
Abt ur doubt, when we perform rituals on dead person, that is our custom so that dead soul gets salvation. We dont wait for the judgement day, where Allah will come and do justice after unlimited period of time.
I hope ur ignorant mind is brighten up by the facts...Better u concentrate on ur religion, else on ur judgement day allah will ask you abt ur deeds and u will have nothing to show except criticizing Hindu!